COOK pasta as directed on package.

MEANWHILE, heat oil in large skillet on medium-high heat. Add chicken; cook and stir until no longer pink. Add peppers and mushrooms; cook 3 min., stirring occasionally. Stir in tomatoes and dressing; simmer on medium-low heat 5 min. or until chicken is done.

DRAIN pasta. Toss with chicken mixture. Sprinkle with cheese and basil.