Two years ago, Gabriel LaBelle broke through in Steven Spielberg’s semi-autobiographical “The Fabelmans,” playing a young version of the esteemed filmmaker. Now, he’s starring in Jason Reitman’s “Saturday Night” as the 30-year-old Lorne Michaels, the creator of “SNL.” In this week’s cover story, the actor discusses his rapid rise to fame and what it was like to film his latest.
