Chris Willman Senior Music Writer and Chief Music Critic It’s been just over one year since the Tonys gave the Pasadena Playhouse an award for regional theater, and that honor looks more justified than ever now that the venue is presenting a much-needed production of “Jelly’s Last Jam.” It feels like they’re re-earning that brass medallion, rather than coasting on it, with a fresh production of writer-director George C. Wolfe’s early ‘90s hit, a show that that helped changed the course of stage musicals and helped set a course for jazz consciousness on Broadway, yet can barely get a revival to save its life.