What do you get when you mix chickens and Chaucer with an unlikely story of love and art set in a chicken coop? We’ll find out when the new musical fable “Chicken Tinders” opens May 22 at Taproot Theatre. The show is a coproduction of Copious Love Productions and Gaisma Theatre Group, a new Seattle company whose raison d’être is supporting musical theater homegrown in the Pacific Northwest and is part of a promising local groundswell for that genre.  Both Gaisma (pronounced “guy-zma”) and “Chicken Tinders” formed, independently, in the dark days of the pandemic, said Gaisma Artistic Director Pauls Macs.  Macs was fresh out of grad school and living in New York when the world shut down.…