Would this be wire fraud?
If you mean DoorDash, I suspect it depends on whether there's something in their presentation that fraudulently impersonates the pizzeria.
Doordash doesn't get the pizza they paid for and want to resell.
Given the restaurant was receiving calls from customers, would it be okay if a customer who ordered from DoorDash called to change their order? If so, we can add an imaginary step where the person who "ordered" these pizzas had them changed to just dough without demanding a price change.
As far as the restaurant is concerned the order was made by the dasher and can't be changed by seemingly random people who happen to call.
That isn't to say it isn't 100% possible, it is.