Pre-heat oven to 375 degrees (190 celsius), lightly grease a medium sized pizza pan or spring form pie plate 8-9 inches (22cm).
Spread the pie pastry on prepared pan then brush the pastry with the melted butter, top with the thinly sliced mozzarella, sprinkle with the cubed pancetta and finally top with the halved grape or cherry tomatoes or sliced Roma tomatoes, sprinkle with salt, oregano and basil, and drizzle with olive oil. Bake in pre-heated over for approximately 30-35 minutes. Let sit 5 minutes before cutting. Enjoy!