Preparation
Preheat oven to 250˚F. Place rack in middle of oven.
Pulse-grind bread in food processor to form soft crumbs. Place rack in middle of oven. Scatter crumbs on baking sheet and toast 15 minutes, until light golden. Raise oven temperature to 450˚F.
Let the crumbs cool in a bowl and melt the butter. Toss crumbs with butter, hot sauce, chili powder, smoked paprika, garlic powder and cheeses.
Cover the cooled baking sheet with parchment paper. Trim a thin slice off the bottom of each potato, giving it stability. Trim the ends then thinly slice the potato across but not all the way through the potato -- stop 1/4 of an inch shy of all the way through. Slices should be 1/8 of an inch thick but no more than 1/4 inch.

