COOK pasta as directed on package.
MEANWHILE, heat 1/4 cup of the dressing in large skillet on medium-high heat. Add chicken; cook 5 min. or until cooked through, stirring occasionally. Add vegetables and parsley; cook 5 min. or until vegetables are tender, stirring occasionally.
DRAIN pasta; mix with chicken mixture and remaining 1/4 cup dressing. Sprinkle with cheese.