Question: can galarian slowpoke be shiny?
Answer: It seems as if the original encounter with Galarian Slowpoke in Wedgehurst is shiny locked, as far as we can tell. ... You'll need to use a Ditto from another region with the Slowpoke to increase the chances of a shiny Pokémon hatching from an egg. With this method, you should get a shiny variant sooner or later.