Preheat oven to 425 degrees F. Line 2 baking sheets with parchment paper. Working with one at a time, unroll pizza dough onto a cutting board with the longest side parallel to the edge of the counter. Cut in half vertically, then use a sharp knife to cut out the numbers 2 and 0. Transfer numbers to a prepared baking sheet. Repeat with remaining dough, cut out the numbers 1 and 9 and transfer to second baking sheet.
Bake for 6 minutes, remove from oven and top each number with pizza sauce, spreading to cover dough to the edges. Top sauce with shredded mozzarella, diced red, yellow and green peppers, onions, zucchini, mushrooms and pepperoni.
Bake for 8-10 minutes longer until crust is golden and toppings are cooked. Serve on a large platter or cutting board with the numbers 2019 next to each other.