Steps
1. Preheat the grill or a grill pan over medium-high heat.
2. In a small bowl, mix olive oil, chili powder, cumin, garlic powder, salt, and pepper to create a marinade.
3. Coat the chicken breast with the marinade and let it sit for 10 minutes.
4. Grill the chicken for 6-7 minutes on each side or until fully cooked.
5. While the chicken is grilling, prepare the avocado salsa by combining diced avocado, tomatoes, cilantro, lime juice, and a pinch of salt in a bowl.
6. Once the chicken is cooked, let it rest for a few minutes before slicing it into strips.
7. Warm the corn tortillas on the grill for about 30 seconds on each side.
8. Assemble the tacos by adding the grilled chicken and topping with the avocado salsa. Serve immediately.