Potato, Arugula, Pecorino & Mozzarella Pizza

1/2lb store-bought pizza crust (makes 6 pies)"

Preheat oven to 450F. Adjust rack to center of oven. Place baking sheet(s) in oven to heat. Divide dough into 6 equal balls. Working in batches, roll out 2 balls @ a time to form 8" circles. Transfer each onto parchment paper.