Looking for a hearty, colorful meal that practically cooks itself? These Zesty Fiesta Slow Cooker Chicken Fajitas deliver tender, juicy chicken with just the right kick of spice. Simply toss your ingredients in the slow cooker and come back to a flavor-packed dinner that’s ready for your favorite tortillas and toppings.

Ingredients

- 1½ lbs boneless, skinless chicken breasts or thighs
- 1 red bell pepper, sliced
- 1 green bell pepper, sliced
- 1 yellow onion, thinly sliced
- 1 (14.5 oz) can diced tomatoes (drained)
- 1 tablespoon chili powder
- 1 teaspoon ground cumin
- 1 teaspoon dried oregano
- ½ teaspoon smoked paprika
- ½ teaspoon garlic powder
- ½ teaspoon salt (plus more to taste)
- ½ teaspoon freshly ground black pepper
- ¼ cup chicken broth (or water)
- Tortillas, for serving
- Optional toppings: shredded cheese, sour cream, guacamole, chopped cilantro
Instructions
Place the sliced bell peppers and onion at the bottom of your slow cooker, forming a colorful bed. Lay the chicken breasts (or thighs) on top. In a small bowl, combine chili powder, cumin, oregano, smoked paprika, garlic powder, salt, and black pepper. Sprinkle this spice blend evenly over the chicken.

Pour the diced tomatoes (drained) and chicken broth over everything, allowing the liquid to help distribute the spices. Cover the slow cooker and set it to cook on low heat for 6 to 7 hours, or on high heat for about 3 to 4 hours. The chicken will become fork-tender, and the peppers and onions will be beautifully soft and sweet.
When the cooking time is up, shred the chicken right in the slow cooker using two forks. Give the mixture a gentle stir, picking up all the juicy flavors from the bottom. Pile the chicken and veggies into warm tortillas and finish with your favorite toppings like shredded cheese, sour cream, guacamole, or fresh cilantro.

Whether you’re feeding a hungry crowd or looking for a no-fuss meal prep option, these Zesty Fiesta Slow Cooker Chicken Fajitas tick all the boxes. They’re perfect for busy schedules, packed with nutrients, and easily adaptable—try swapping chicken breast for turkey or even tofu if you’re craving a vegetarian twist.
With their bright colors and bold flavors, these fajitas bring a party to your dinner table, satisfying everyone from spice lovers to picky eaters.
Nathaniel Lee is an avid cook, drawing on his decades of home cooking and fine dining experience. He is a contributing chef at Mashed, and his recipes and contributions have been featured in Tasting Table, Edible Arrangements, Insanely Good Recipes, and The Daily Meal.
