HEAT large nonstick skillet sprayed with cooking spray on medium-high heat. Add peppers and onions; cook and stir 6 to 8 min. or until crisp-tender. Transfer to large bowl; cover to keep warm.
ADD meat, garlic and black pepper to skillet; cook and stir 3 min. Stir in soy sauce; cook 1 min. or until meat is done, stirring occasionally. Add barbecue sauce; cook until heated through, stirring occasionally.
COMBINE meat mixture and vegetables. Serve over rice.