COOK pasta
as directed on package.
MEANWHILE, heat oil in large skillet on medium-high
heat. Add chicken. Cook and stir 6 min. Add peppers, dressing and chili powder; cook 3 min. or until chicken is cooked through,
stirring frequently. Stir in salsa and sour cream.
DRAIN pasta. Toss
with chicken mixture. Sprinkle with cheese.