Stir together garlic, cumin, chili powder and soy sauce. Stir in chicken until coated add cilantro. Cover. Spray skillet with Pam add chicken and cook for 3-4 minutes. transfer chicken to foil wrapping tightly set aside. In same skillet saute' the peppers and onions. Return chicken and sauceto skillet and cook for 3 minutes. Drizzle with lime juice. Add to shells topped with cheese and sour cream.