Preheat the oven according to the temperature directions on the Pillsbury pizza dough package.
Lightly coat a pizza pan or baking sheet with olive oil.
Unroll the refrigerated pizza dough and gently shape it into your desired pizza shape.
Bake the plain crust for about 8 minutes, until it begins to turn lightly golden.
Remove the crust and brush the edges with garlic butter.
Return the crust to the oven for about 1 minute to let the garlic butter soak into the crust.
Spread pizza sauce over the center, leaving the edges uncovered.
Top with shredded mozzarella, pepperoni, and tomatoes.
Sprinkle oregano over the pizza.
Bake for about 7 minutes, or until the cheese is melted and bubbly and the crust is golden.
Let the pizza rest for 2–3 minutes, then slice and serve.