As upscale convenience store chain Foxtrot plots a comeback, licensing, staffing and lease renegotiations are among its biggest challenges, CEO Mike LaVitola said Thursday. “It is people and licenses,” LaVitola said in a virtual conversation with food writer and TV personality Steve Dolinsky hosted by the Executives’ Club of Chicago. Backed by a New York-based investment firm, the reborn Foxtrot reopened its first store, in the Gold Coast, earlier this month and plans to reopen a second, at 1562 N.