1Cook and drain pasta as directed on package.
2While pasta is cooking, spray 12-inch skillet with cooking spray; heat over medium-high heat. Cook chicken in skillet 3 to 4 minutes, stirring frequently, until brown.
3Stir bell peppers, asparagus, water and pepper into chicken; reduce heat. Cover and simmer 3 to 4 minutes, stirring occasionally, until chicken is no longer pink in center and vegetables are crisp-tender.
4Stir pasta and Alfredo sauce into chicken mixture; cook until hot.