HEAT large skillet sprayed with cooking spray on medium-high heat. Add chicken; cover. Cook 5 min. on each side or until browned on both sides.
ADD vegetables, pesto and water; cover. Bring to boil; cook on medium heat 6 to 8 min. or until chicken is done (170ºF).
SPRINKLE with cheese. Remove from heat. Let stand, covered, 5 min.
