Former U.S. attorney for the Northern District of Illinois Zachary T. Fardon, who stepped down in March after serving 3½ years, will be leading a series of talks at Northwestern Pritzker School of Law beginning next month.Fardon has been named a visiting distinguished scholar for the 2017-18 academic year at Northwestern, when he’ll be speaking on the issue of Chicago’s gun violence as well as moderating discussions on the issue.When he began his tenure as U.S. attorney, Fardon was tasked with addressing …