Wizards of Waverly Place (2007)

S3E18 Dad's Buggin' Out

When Jerry gets bitten by a mystical insect from the wizard realm, he undergoes a shocking transformation into a massive bug. At the same time, Harper decides to join the Alien Language League, which Zeke and Justin are part of. The group is busy preparing for their yearly banquet at the Sub Station, adding to the chaos as they try to navigate their unusual situation while dealing with Jerry’s bizarre new form.