Toss potatoes, minced garlic, onion, bell peppers, dry seasoning, melted butter, and egg whites in a medium bowl. Stir until well coated. Arrange in a single layer on a parchment lined baking sheet.
Bake 25 minutes at 425, stirring twice. Turn oven to broiler, and broil 3-5 minutes, watching closely, until browned and crisp.