Preheat your campfire grill or set up a campfire with a grate over the flames.

Place one flour tortilla on a flat surface.

Spread a generous spoonful of pizza sauce evenly over the tortilla.

Sprinkle shredded mozzarella cheese over the sauce, covering the entire surface.

Arrange pepperoni slices, sliced bell peppers, and sliced mushrooms on top of the cheese.

Roll up the tortilla tightly, starting from one end.

Repeat the process with the remaining tortillas and ingredients.

Wrap each rolled-up tortilla in aluminum foil, ensuring they are securely wrapped.

Place the foil-wrapped roll-ups on the grill or over the campfire, and cook for 5 minutes on each side, or until the cheese is melted and the roll-ups are heated through.

Carefully remove the foil-wrapped roll-ups from the heat using heat-resistant gloves or tongs.