Place an oven rack in the center of the oven. Preheat the oven to 475 degrees F. Sprinkle a heavy baking sheet (without sides) with cornmeal. Set aside.
In a food processor, blend the ricotta, garlic, salt, and pepper until smooth. Add the smoked mozzarella and arugula. Pulse until just combined but still chunky.
On a lightly floured work surface, roll out the dough into a 14-inch diameter circle, ¼ to ⅛ inch thick. Transfer the dough to the prepared baking sheet and drizzle with olive oil.Spread the ricotta mixture on top leaving a 1-inch border. Arrange the tomato slices on top. Drizzle with olive oil.
Bake for 15 to 16 minutes until the crust is golden. Cut into wedges and serve.