PREHEAT oven to 400°F. Mix stuffing mix and water. Spoon evenly onto centres of 4 large separate sheets of heavy-duty aluminum foil. Top each with 1 chicken breast and 1/2 cup broccoli. Sprinkle evenly with cheese and bacon bits, then drizzle evenly with dressing.
BRING up foil sides. Double fold top and ends to seal each packet, leaving room for heat circulation inside. Place foil packets in single layer in 15x10x3/4-inch baking pan.
BAKE 30 to 35 min. or until chicken is cooked through (170°F). Remove packets from oven; let stand 5 min. Place 1 packet on each of 4 dinner plates. Cut slits in foil with sharp knife to release steam before opening.