 " President Evil " was written by Jonathan Moskin and David Mulei and directed by Nick Marck , marking Moskin 's first writing credit , Mulei 's first writing credit for the show , and Marck 's eighth directing credit for Veronica Mars . Dianna Agron , famous for her role as Quinn <unk> on Glee , makes her first appearance on the series in this episode as Jenny , Veronica 's classmate . She would eventually appear on several episodes of the third season . 
