Step 1

In a small bow, stir together the chili powder, paprika, salt, black pepper cumin, garlic powder, and cayenne pepper until combined.

Step 2

For grilling: Preheat grill. Brush chicken breasts with oil and then season liberally on both sides.For stove top: place a large skillet over medium-high heat. Add oil to pan and season chicken liberally on both sides.

Step 3

Place chicken on hot grill/skillet. Cook for 4 to 5 minutes per side or until no longer pink in the center, flipping once.

Step 4

Remove from heat and transfer to a cutting board to rest.

Step 5

Cook tortillas on grill or in cleaned skillet until beginning to brown, but still flexible. (Do this for corn or flour tortillas.)

Step 6

Chop or shred chicken. Mix together to help distribute seasoning to inside parts of chicken.

Step 7

Add a few tablespoons of chicken along with some cheese, lettuce, tomatoes, and avocado to a taco shell. Repeat with remaining ingredients. Serve immediately.