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Slow Cooker Chicken Fajitas

Slow cooker chicken fajitas are a quick meal to prepare; just add it all to the slow cooker and leave it to cook while you do something else!

chicken fajitas in a slow cooker with various side dishes next to it including lettuce, onions, grated cheese, salsa and tortilla wrap

How To Make Slow Cooker Chicken Fajitas

Chicken fajitas don’t take too long to make in a pan, and you can even make them in an air fryer, but sometimes, like with my other slow cooker recipes, it’s nice to come home to a meal ready to serve.

What You Need To Make Slow Cooker Chicken Fajitas

ingredients for slow cooker chicken fajitas: 4 chicken breasts, fajita spice mix, chopped orange, red and green peppers, chopped red onions and chopped tomatoes
  • 4 chicken breasts
  • 3 to 4 tbsp fajita mix
  • 200g tinned tomatoes
  • Mixed peppers (I used 1 red, 1 green and 1 yellow)
  • 1 red onion

The Chicken

I used chicken breasts for this meal, but you can also use boneless chicken thighs.

Fajita Seasoning

Much like fajitas made in a pan, you can either use a homemade fajita seasoning mix or grab a premade one from the supermarket.

To make your own, use a combination of spices, including; chilli powder, smoked paprika, garlic powder, ground coriander, and ground cumin.

Making It

chicken breasts, mixed chopped peppers, red onions in slow cooker

I like to stir the fajita spice mix into the chopped tomatoes before adding them to the slow cooker.

Then it really is a case of adding everything to the slow cooker, mixing it together, adding the lid, and turning it on.

If you use chicken breasts, cook on low for 4 hours or on high for 2 to 3 hours. Chicken thighs can be cooked longer as they won’t dry out so quickly.

cooked chicken fajita in slow cooker

At the end of the cooking time, remove the chicken from the slow cooker, slice it up, or shred it.

If the remaining sauce seems too thin, leave it to cook on high for a further 20 to 30 minutes with the lid off, or transfer it to a saucepan and simmer it to reduce the consistency.

How To Serve Chicken Fajitas

Slow cooker chicken fajitas can be served with rice, in tortilla wraps (with salsa, lettuce, and grated cheese), over nachos, or on top of a jacket potato.

Slow Cooker Chicken Fajitas

Slow Cooker Chicken Fajitas

Yield: 4
Prep Time: 5 minutes
Cook Time: 4 hours
Total Time: 4 hours 5 minutes

Slow cooker chicken fajitas are quick to prepare and taste perfect loaded into some soft tortilla wraps!


  • 4 chicken breasts
  • 3-4 tbsp fajita spice mix
  • 1 onion, chopped
  • 1 red pepper, sliced
  • 1 green pepper, sliced
  • 1 yellow pepper, sliced
  • 200g tinned tomatoes

To Serve:

  • 4 - 8 tortilla wraps
  • Tomato salsa
  • Lettuce
  • Grated cheese


  1. Lay chicken breasts in slow cooker.
  2. Mix the fajita mix with the chopped tomatoes and add to the slow cooker.
  3. Add chopped onions, peppers and tomatoes - stir everything together.
  4. Place the lid on the slow cooker and set off on low for 4 hours, or high for 2-3 hours.
  5. Remove chicken breasts from the slow cooker and slice before returning to the slow cooker.
  6. If the sauce is too runny in consistency for you, leave the lid off the slow cooker and cook on high for about 20 to 30 minutes to thicken it up, or transfer to a saucepan and simmer until the sauce has thickened and reduced.
  7. Serve with tortilla wraps or load on top of jacket potatoes
Nutrition Information:
Yield: 4 Serving Size: 1
Amount Per Serving: Calories: 834Total Fat: 21gSaturated Fat: 6gTrans Fat: 0gUnsaturated Fat: 12gCholesterol: 125mgSodium: 1061mgCarbohydrates: 100gFiber: 8gSugar: 6gProtein: 60g

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Friday 23rd of June 2023

Could you use diced chicken and how would it effect cooking

Liana Green

Sunday 24th of September 2023

I've not used diced chicken before for this recipe but yes, you could, I would reduce the cooking time though to stop it from drying out.

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