MIX cream cheese spread, seasoning and milk until blended. Cook and stir chicken and peppers in large nonstick skillet on medium-high heat 7 to 8 min. or until chicken is done, stirring occasionally. Add tomatoes, corn and cream cheese mixture; cook and stir 3 min.
ADD pasta and 1/2 cup shredded cheese; cook and stir 1 to 2 min. or until cheese is melted.
TOP with remaining shredded cheese. Remove from heat. Cover; let stand until cheese is melted.