HEAT oven to 400ºF.
COVER baking sheet with foil; spray with cooking spray. Combine corn, beans, salsa and 1/2 cup cheese. Place chicken, top-sides down, on work surface; top with corn mixture. Roll up tightly, starting at one short end of each.
PLACE coating mix in shallow dish. Add chicken; turn to evenly coat all sides. Place, seam-sides down, on prepared baking sheet.
BAKE 25 to 30 min. or until chicken is done (165ºF). Sprinkle with remaining cheese; bake 2 min. or until melted.