#1 Place a pizza stone or steel on the middle rack and set oven to 500 degrees Fahrenheit. Let preheat 30 minutes #2 Lightly flour a large piece of parchment paper. Dust hands with flour and stretch dough into a 12-inch circle place on prepared parchment paper #3 Roughly chop ¼ cup basil and combine with the crushed tomatoes, salt and pepper in a small bowl #4 Spread the sauce over the dough, leaving a 1 inch border around the edges, then top with dollops of pesto. Cover with mozzarella cheese and pepperoni and bake until crust is golden brown and cheese is melted, about 8 minutes #5 Tear remaining ¼ cup basil leaves. Add torn leaves to the pizza then garnish with spoonfuls of calabrian chiles or crushed red pepper. Drizzle with olive oil, then slice and serve