Cut Potatoes into 1/4 inch thick slices. Generously spray both sides of Potato Rounds with Butter spray. Place on baking stone or cookie sheet and bake 20 minutes or until lightly browned; remove from oven.
Combine cheese, bacon, & Scallions. Brush each Potato Round with BBQ sauce, sprinkle with cheese mixture, and return to oven. Bake 3-5 minutes or until cheese is melted.