Preheat the broiler.

Toast garlic bread cubes under the broiler until golden brown.

While bread is toasting, combine pizza sauce, Italian seasoning, garlic powder, diced pepperoni, green pepper, and red pepper flakes in an oven-safe dish.

Remove toasted bread from broiler and allow to cool slightly.

Place sauce mixture under the broiler for 5 minutes, or until slightly bubbling.

Cover the sauce with shredded mozzarella cheese.

Return the dish under the broiler until the cheese melts and begins to brown.

Remove the fondue from the broiler and let it sit for a couple of minutes.

Serve immediately with toasted garlic bread, fried veggies, or tortilla chips.