Marinate chicken breasts in first 5 ingredients (lime juice, salsa, minced garlic, chili powder and cumin).
Wrap tortillas in stacks of 4-inch foil, heat in 350°F oven approx 10 minutes.
Meanwhile in in a large skillet over medium heat, heat oil (enough to cover bottom of skillet). Sauté onions that have been cut in strips and peppers that have been cut in strips until tender crisp approximately 3-5 minutes. Remove and set aside(keep warm).
Add marinated chicken with marinade mixture to skillet and cook through. Cut into strips. Combine with onions and peppers add salt and pepper to taste. Spoon mixture into tortillas and roll. Serve topped with sour cream, grated cheddar and salsa.