Joey obviously is a big a**hole and deserves all kinds of shit, but sending pizzas his way is hurting the wrong people: pizza maker and delivery driver.
Whoever is doing this, stop it.
If you can't come up with legit ways of pestering Joey without annoying innocent third parties, just leave him alone.
His life is already pretty miserable, and it will most likely get worse over time by his own actions.

Onkel Paul