Preheat oven to 425°F and line a baking sheet with parchment.
Divide dough into 8 pieces and roll each into a small rectangle.
Place mozzarella in the center of each rectangle, fold over, and seal edges tightly.
Shape each piece into a ring and place on the baking sheet.
Spoon pizza sauce into the center of each ring.
Top with remaining mozzarella, pepperoni, olives, and diced peppers.
Brush crust edges with olive oil and sprinkle lightly with salt.
Bake 12–15 minutes until golden and bubbly.
Rest 2 minutes, then serve hot.
Tip: Seal dough edges firmly to keep the cheese inside while baking.