By Veronika Bondarenko The pizza chain’s “Because You Earned It” comes amid a severe worker shortage in the the industry. Domino’s (DPZ) – Get Domino’s Pizza, Inc. Report built its business on delivery but labor shortages have made delivery a tough model to deliver on right now. Because of that, the pizza chain wants more customers to pick up their own orders and has encouraged them to do that with a “tip discount.” As part of the “Domino’s Carryout Tips: Because You Earned It” promotion taking place from now until May 22, those who order at least $5 of Domino’s food before tax online will get…