Individual Pizza with Arugula and Tomatoes

Preheat oven to 450 degrees, with racks in upper and lower thirds. Divide dough into four equal pieces. Using your hands, stretch each piece into a 5-inch disk.

Brush two rimless baking sheets with oil. Place disks of dough on baking sheets; brush dough lightly with oil. Using your hands, crush tomatoes in a bowl; season with salt and pepper. Spread tomatoes on dough; sprinkle with red-pepper flakes. Bake, rotating sheets from top to bottom and front to back halfway through, until crusts are golden, 18 to 20 minutes.

Toss arugula with cheese; divide among pizzas. Drizzle with vinegar and oil.