Heat oven. In oven-proof skillet, over medium high heat, heat oil and cook peppers and onions till tender-crisp, about 8 mins, stirring. Remove from heat and stir in franks and remaining ingredients except potatoes. Arrange frozen potatoes evenly over mixture in skillet; bake 30 mins or till potatoes are well browned, carefully turning potatoes after 15 mins. Toss gently before serving.
