What is better than an extra-large pizza? How about a pizza that helps a good cause. For July 2017, you can help the Kids Cancer Alliance by using the promo code "KCA2017" on PapaJohns.com. They'll get a donation, and you'll get any large, five-topping or specialty pizza, and a 10-inch cheese stick, for $15. Be sure to pick up the new "Double XL" pizza for $12, which includes extra-large toppings to feed the whole family.