Crockpot Chicken Fajitas – Organize Yourself Skinny

Crockpot Chicken Fajitas are easy to prepare, delicious, and the perfect family-friendly weeknight dinner. This recipe only takes 5 minutes to throw together and requires minimal ingredients. You can enjoy it with tortillas and all of your favorite fajita fixings. Or make a fajita bowl using brown rice or keep it low carb and eat it over cauliflower rice.

strips of chicken fajitas on a plate next to the onions and peppers.

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We eat a lot of fajitas in our house. And I make them all different ways depending on the night and what meat is available in the refrigerator. Sometimes I make these easy skillet steak fajitas or sheet pan chicken fajitas when I need a quick dinner during the week. 

I also make sheet pan steak fajitas. I made crockpot steak fajitas a few months ago, and we all loved them. So, when I saw chicken, peppers, and onions looking for recipe inspiration, I decided to make crockpot chicken fajitas.

Reasons you’ll love this recipe

  • Simple ingredients. All you need are chicken breast, peppers, onions, tomato sauce, and fajita seasoning.
  • Dump and cook. There is minimal prep time and no extra steps to this slow cooker recipe; all you need to do is layer the ingredients into the slow cooker and turn it on.
  • Delicious. Bold, spicy flavors with a burst of freshness. Everybody loves these fajitas.
  • Healthy. Gluten-free, Whole30 compliant, and paleo-friendly recipe.
  • Make-ahead. You can assemble the ingredients the night before or make ahead to warm up all week. Or prep into a freezer kit to make for dinner later on.


ingredients to make crockpot chicken fajitas
  • Fajita seasoning. Nothing beats homemade fajita seasoning but if you’re going to grab a store-bought packet, then make sure to lead the label to make certain ingredients are clean.
  • Boneless chicken breasts. High-quality organic chicken will give the best results.
  • Tomato sauce. This provides moisture to the chicken and creates a tasty sauce that goes nice with tortillas or rice. 
  • Bell peppers and onions. Any color combination of bell peppers will work, and even though you can use red onion, I think white onions are best for fajitas.
  • Jalapeno pepper. This ingredient is optional, but it gives the fajitas an extra spicy kick.
  • Fresh lime juice and cilantro. This combo gives the fajitas a bright, fresh flavor.

Cooking Tips

  • Spice it up with canned chilis or extra jalapenos. You can even add some ground chipotle chili powder or cayenne powder to the fajita seasoning.
  • Use salsa instead of tomato sauce. Tomato sauce creates a thicker sauce, but salsa will do the trick. Use your favorite salsa flavor. You can use fire-roasted or chili-flavored canned diced tomatoes, but the sauce won’t be as thick.
  • You can also use chicken broth. This chicken fajita recipe needs a liquid to keep the chicken from drying out as it cooks in the crockpot. If you don’t have tomato sauce, diced tomatoes, or salsa, then use 1/2 cup chicken broth in its place.
  • Make sure veggies stay on top, so they don’t get mushy. If you want them crisper, add in the last hour of the recipe.
  • If you don’t have fajita seasoning, you can substitute taco seasoning
  • Add more veggies. If you want to make this a veggie-loaded recipe, add in a couple more bell peppers and another onion. Mushrooms are also tasty in fajitas.
  • You have options with the chicken. If you prefer sliced chicken, carefully remove it, place it onto a cutting board, and cut it into chicken strips. For shredded chicken, place the chicken into a bowl and, using two forks, shred the chicken.
Chicken fajita recipe ingredients layered into a crockpot

How to Make Crockpot Fajitas

step by step collage showing how to make chicken fajitas in the crockpot.
  • In the bottom of the slow cooker, place the chicken breasts.
  • Sprinkle with fajita seasoning.
  • Pour the tomato sauce on top and then turn the chicken over a couple of times to mix the sauce and seasoning,
  • Place the onions and peppers on top of the chicken. Keeping the veggies on top will prevent them from getting too soft.
  • Tightly place the lid on and cover and cook on low for 4-6 hours or on high for 2-3 hours until chicken is. I recommend cooking on the low setting because chicken breasts can quickly dry out when cooking on high.
  • After the chicken cooks, remove it from the crockpot and slice the chicken into strips or shred it. Either one works great with fajitas.
  • Place the chicken onto a platter. Scoop out the veggies from the insert and place next to the chicken. **You can leave the chicken and veggies in the slow cooker, but there will be extra liquid that was released from the vegetables. I like to remove the chicken and veggies from the liquid and place them onto a platter. Then I’ll spoon extra sauce over it.
  • Give the chicken and veggies a taste for salt and pepper, squirt with lime juice and sprinkle with fresh cilantro (if using), and then dinner is ready to serve.

Serving Suggestion

  • Serve with corn tortillas or flour tortillas, sour cream, shredded cheese, and all your favorite fajita fixings. Guacamole is also tasty with this chicken fajita recipe.
  • Serve over rice and make a fajita bowl. Add avocado, black beans, and other toppings. You can keep it low carb by using cauliflower rice.
  • Serve over salad.
  • Serve along side Mexican potatoes.
Chicken fajitas on a platter

Storage suggestions

For the week

  • Assemble the ingredients into the slow cooker insert, cover, and refrigerate for two days. On cooking day, continue with the recipe. Remember that you might need to add on more cooking time because the insert will be cold.
  • Cook the recipe thoroughly, place in an airtight container and refrigerate for up to 4 days. Heat up in the microwave or on the stove.

To freeze

  • Turn this into a freezer meal kit. Assemble the chicken, fajita seasoning, and tomato sauce into a freezer bag. In a second freezer bag, place the onions and peppers. Label and place into the freezer for up to 3 months. 
  • When you’re ready to cook, take the freezer kit out and let it in the refrigerator for 1-2 days. You don’t want to place the chicken fajitas into the slow cooker frozen because it won’t come up to temperature fast enough, which can cause bacteria to form, bringing the chicken into a danger zone. So let it thaw completely before cooking in the crockpot.

Other healthy slow cooker chicken recipes.

See other healthy slow cooker recipes

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