2 tbsp. vegetable oil ½ onion, sliced and separated into strips 1 Italian long hot pepper, sliced into strips 1 garlic clove, minced 1-8 oz. package seitan, sliced into thin strips ½ tsp. black pepper ¼ tsp. paprika ⅛ tsp. salt 2-6 inch sandwich rolls, sliced open ¼ cup nacho sweet potato cheese 2-3 tbsp water