You'll need to enter the code "51OFF" when placing your order.
The special is available through August 25, 2019.
The pizza chain calls themselves, "The home of the Original Flavored Crust," and offers eight different crust flavors: Sesame, Butter Cheese, Butter, Ranch, Cajun, Garlic Herb, Onion, and Asiago.
Photo via Hungry Howie's.