PREHEAT oven to 400°F. Place vegetables in foil-lined 15x10x1-inch baking pan. Drizzle with 2 Tbsp. of the dressing; toss to coat.
TOP with chicken; drizzle with remaining 2 Tbsp. dressing.
BAKE 40 min. or until potatoes are tender and chicken is cooked through, topping with the cheese after 35 min.