Boulder’s Local Theater Company, which was founded in 2011 but really found its footing during the pandemic shutdown, has announced an unusual leadership transition from a single artistic director to a triumvirate. Under the plan, Nick Chase and Betty Hart will join founder Pesha Rudnick as co-Artistic Directors. Shared-leadership models are not all that uncommon in the Colorado performing arts, notably at the disability-affirmative Phamaly Theatre Company. But Local is embarking on a unique plan tailored for its mission to discover, develop and produce new American plays. Hart, already the president of the Colorado Theatre Guild (an advocacy group for local theater), becomes the 17th Colorado theater leader to be…