Preheat the oven to 450°F. Sprinkle 2 large baking sheets with a light dusting of cornmeal. Lightly flour the work surface.

Separate the pizza dough into 2 equal pieces. Roll out each piece of dough into a 10-inch circle and transfer it to a prepared baking sheet. Layer the sliced pears evenly on the 2 pizzas, leaving a ½-inch border all the way around. Drizzle the olive oil evenly over the pizzas and sprinkle the salt and pepper over the top. Bake until the crust is just starting to turn golden brown, about 10 minutes.

Sprinkle the crumbled gorgonzola cheese all over and top with the arugula and an additional drizzle of oil, if desired. Serve immediately.