Line a large baking sheet with foil and preheat oven to 450 degrees.
Cut potatoes into 1/4 inch slices. Toss the potatoes, olive oil, salt and pepper in a big ziploc bag to coat the potatoes. Arrange potatoes in a single layer on the baking sheets. Bake until lightly browned, about 15-20 minutes. Brush with A-1 Sauce, then top with the shredded cheese. Bake until the cheese melts, about 3-5 minutes. Top with sour cream, if desired. You want to go easy on the salt, since the A-1 already has so much salt in it.