Was queen chrysallis from My Little Pony friendship is magic originally princess papillon?

No, Queen Chrysalis from "My Little Pony: Friendship is Magic" was not originally Princess Papillon. Queen Chrysalis is a unique character created as the leader of the Changelings, while Princess Papillon was a character from early concept art and never made it into the final series. The two characters are distinct and serve different roles in the show's lore.