Cook and stir chicken into large skillet sprayed with cooking spray of choice on medium-high heat for 5 mins or until no longer pink
Stir in water, bring to boil
Add pasta, stir
Cover, simmer on medium-low heat for 10 minutes or until pasta is tender
Add remaining ingredients and stir
Cook, covered, for 5-7 minutes or until Velveeta is completely melted and vegatables are crisp-tender, stir frequently