In a small mixing bowl, add the chili powder, cumin, paprika, onion powder, garlic powder, salt, and pepper. Stir or whisk the spices together until they are fully combined. This homemade blend creates a well-balanced seasoning that adds depth and warmth to the chicken.
Place the chicken breasts inside a zip-top plastic bag and use a meat mallet or a rolling pin to gently pound them until they are an even ½-inch thickness. Flattening the chicken ensures that it cooks evenly and helps avoid dry or undercooked spots.
Remove the chicken from the bag and generously rub the seasoning mix over all sides. Press the spices into the surface to ensure they stick and deliver bold flavor during cooking.
Choose your preferred method for cooking the chicken—whether in a skillet, on the grill, or in an air fryer—and cook until the internal temperature reaches 165 degrees Fahrenheit.
To cook the chicken on the stovetop, heat a tablespoon of olive oil in a large skillet over medium heat. A cast iron skillet works especially well for even heat distribution and a nice sear. Once the oil is hot, place the seasoned chicken breasts in the pan and cook for about 5 to 8 minutes on each side. The chicken should be golden on the outside and reach an internal temperature of 165 degrees Fahrenheit. If the chicken breasts are thick, you can cover the skillet with a lid to help trap the heat and ensure the centers cook through evenly.
If you prefer grilling, place the chicken on an outdoor grill or an oiled grill pan set over medium to medium-high heat. Cook for 5 to 8 minutes per side, turning once, until the chicken is fully cooked and has nice grill marks on the outside.
For an air fryer method, preheat the air fryer to 400 degrees Fahrenheit. Add the chicken breasts to the basket and cook for 13 to 20 minutes, flipping them halfway through the cooking time. Check that the internal temperature reaches 165 degrees Fahrenheit before removing the chicken.
After cooking, let the chicken rest for 5 minutes to allow the juices to redistribute, which helps keep the meat moist and flavorful. Once rested, chop the chicken into bite-size pieces, perfect for taco filling.
To prepare the tortillas, warm them in a dry skillet on the stove for a few seconds on each side, or microwave them between two paper towels until soft and flexible. Fill each tortilla with the chopped chicken and your favorite toppings, such as avocado, cheese, salsa, or shredded lettuce. Serve immediately while everything is warm and fresh.