In a skillet, heat the olive oil over medium heat. Add the shredded chicken, chili powder, cumin, garlic powder, onion powder, paprika, salt, and black pepper. Stir to combine and cook for about 5 minutes until heated through.
While the chicken is cooking, prepare the Avocado Lime Crema. In a blender or food processor, combine the avocado, sour cream, lime juice, salt, and garlic powder. Blend until smooth and creamy. Adjust seasoning to taste.
Warm the tortillas in a dry skillet over medium heat for about 30 seconds on each side or until pliable.
Assemble the tacos by placing a generous portion of the spicy chicken on each tortilla. Top with shredded lettuce, diced tomatoes, shredded cheese, and a drizzle of the Avocado Lime Crema. Sprinkle with chopped cilantro.
Serve immediately and enjoy!