Start by mixing the chili powder, cumin, paprika, garlic powder, onion powder, salt, and pepper in a small bowl. Rub this seasoning blend all over your chicken. Heat olive oil in a large skillet over medium heat, then add the chicken. Cook for about 6-7 minutes on each side, or until the chicken is fully cooked and golden. Once done, set it aside to rest while you prepare the rest of the dish.