HEAT grill to medium-high heat.
POUR 1/4 dressing over combined chicken and peppers in shallow dish. Refrigerate 10 min. Remove chicken and peppers from dressing; discard dressing.
GRILL chicken and vegetables 12 to 15 min. or until chicken is done (165°F) and peppers are crisp-tender, turning and brushing occasionally with remaining dressing.
SERVE chicken mixture over rice.