Preheat oven to 190°C/170°C fan-forced. Line a tray with baking paper. Place bread bases on prepared trays. Combine chicken and pasta sauce in a large bowl.
Spoon chicken mixture over bases. Top with mozzarella, then bread tops. Spray with oil. Sprinkle with parmesan. Bake for 5-8 minutes or until cheese has melted and bread is toasted. Serve sprinkled with parsley.