Toss chicken with next 3 ingredients in large bowl until evenly coated. Cook in large nonstick skillet on medium-high heat 8 min. or until evenly browned, stirring frequently. Remove from skillet; set aside.
Add peppers to skillet; cook and stir 2 min. Stir in vinegar; cook 1 min. or until vinegar is cooked off. Return chicken to skillet with tomatoes; stir. Cover; simmer on medium-low heat 15 min. or until heated through.
Top with cheese; let stand, covered, 2 min. or until melted.
Nutritional info per serving calories 320 total fat 18 g saturated fat 7 g cholesterol 90 mg sodium 300 mg carbohydrate 9 g dietary fiber 3 g sugars 4 g protein 31 g vitamin a 20 %DV vitamin c 30 %DV calcium 25 %DV iron 10 %DV