1.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. 2.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. 3.Top With Cheese; Let Stand, Covered, 2 Min. Or Until Melted.