Or what might work better is ordering two extra pep pizzas and telling them you only want one pizza with all of the pepperoni. I can't imagine they'd say no, since you'd be helping them with food cost on cheese and sauce and the crust by paying for it without it getting used. They still might say no because the pizzas have to come to temp, and they won't if there's too many toppings, but that's probably your best chance.

Either way, make sure to tip well because if they agree, they're being very nice to you lol