Follow these simple steps to create delicious chicken tacos that are sure to impress.

1. Step 1

   In a medium bowl, combine olive oil, lime juice, chili powder, cumin, garlic powder, salt, and black pepper. Mix well to create a marinade.

2. Step 2

   Add the chicken breast to the marinade, ensuring it is well coated. Cover and refrigerate for at least 15 minutes.

3. Step 3

   Heat a large skillet over medium heat. Add the marinated chicken and cook for 6-7 minutes on each side, or until fully cooked and no longer pink inside.

4. Step 4

   Remove the chicken from the skillet and let it rest for 5 minutes. Then, slice it into thin strips.

5. Step 5

   Warm the corn tortillas in a dry skillet over medium heat for about 30 seconds on each side.

6. Step 6

   Assemble the tacos by placing sliced chicken, avocado, tomato, cilantro, and onion on each tortilla. Add a dollop of sour cream if desired.

Feel free to customize with your favorite toppings.