Any way you slice it, that’s a heck of a lot of dough.

John “Johnny Pizza” Porcello is a reputed Genovese crime-family associate who — logically — owns a Bronx pizzeria.

But now he’s going to have to fork over a large stack of pepperoni to good ol’ Uncle Sam. Brooklyn federal prosecutors yesterday hit Porcello, who pleaded guilty to loan-sharking, with a forfeiture order of $18,000.