Preheat oven to 450 degrees. Turn a large baking sheet upside down; rub with oil. Using your hands, crush tomatoes into a pulp in a small bowl; season with salt and pepper.
Spread crushed tomatoes on pizza shells; sprinkle with red-pepper flakes. Bake until crusts are golden, 18 to 20 minutes.
In a bowl, toss arugula with Pecorino; top pizzas with salad. Drizzle with vinegar and, if desired, oil.
I just made this pizza crust for the family and guests tonight. Everyone loved it. I made individual taco pizzas for the kids and used the other 6 pizza crusts for a variety of pizzas cut into appetizers. I was surprised at how easy this recipe was to make, particularly with the kneading. Couldn't have been easier! This is going to replace our store bought crust!
I made this for my husband and myself. WE LOVED IT!!