Bring water to a boil for pasta in large stockpot. Cut broccoli into bite-size pieces. Shred cheese and chicken (breast meat only), about 2 cups each. Cook bacon in microwave following package instructions. Chop bacon coarsely; set aside. Preheat oven to 400°F. Cook pasta following package instructions. Stir in broccoli and chicken during last minute of cook time. Crush crackers and place in bottom of 9-inch square baking dish. Drain pasta mixture thoroughly and return to pan. Stir in remaining ingredients until well blended; spoon mixture over crackers in baking dish. Cover dish with foil; bake 12-15 minutes or until hot and broccoli is tender. Serve.