COOK pasta as directed on package, omitting salt. Meanwhile, cook sausage in large skillet on medium heat 10 min., stirring frequently. Stir in peppers; cook and stir 7 min. or until sausage is done and peppers are crisp-tender. Stir in tomatoes; cook 2 min. or until heated through, stirring occasionally.
DRAIN pasta. Add to sausage mixture with shredded cheese blend; mix well.
TOP with Parmesan.