Show your pizza pride at the Pizza Underground‘s upcoming Chicago shows with this free printable pizza mask! The Pizza Underground will be hosting a free pizza party at East Room on Friday, September 12th, 2014. They’ll also be performing at Chicago’s Riot Fest on Saturday, September 13th, 2014. Inspired by the Pizza Underground’s music video, this free printable pizza mask is sure to make all your cheesy friends jealous. Take a photo wearing your pizza mask and #Encyclopizzeria on Twitter or Facebook to receive a free pizza inspired Chicago flag sticker.