MIX barbecue sauce and jelly until blended. Reserve 1/4 cup sauce mixture; pour remaining over chicken in shallow dish. Turn to evenly coat both sides of each piece. Refrigerate 30 min. to marinate.
HEAT oven to 400°F. Remove chicken from marinade; discard marinade. Place chicken, skin sides up, on rack in foil-lined pan.
BAKE 40 to 50 min. or until chicken is done (165ºF). Brush with reserved sauce before cutting into pieces to serve.