In a bowl, coat the chicken with olive oil, chili powder, cumin, garlic powder, onion powder, salt, and pepper.
Grill or pan-sear the chicken on medium heat for 6–7 minutes per side, or until fully cooked.
Let the chicken rest for a few minutes, then slice thinly.
Warm tortillas in a dry skillet or microwave for 10–15 seconds.
Assemble each burrito with lettuce, cheese, tomatoes, onions, sliced chicken, and a generous drizzle of chipotle ranch.
Wrap them up tight and serve warm — or toast them briefly in a skillet for a crispy finish.