COOK pasta as directed on package, omitting salt.
MEANWHILE, mix cream cheese spread, milk and seasonings until blended. Cook and stir chicken in large nonstick skillet on medium heat 5 to 6 min. or until done. Add vegetables; cook 2 to 3 min. or until heated through, stirring occasionally. Add cream cheese mixture; cook and stir 3 min. or until heated through.
DRAIN pasta. Add to chicken mixture; toss to evenly coat.