That's not a fan translation.
I have no idea how this headcanon about Ryo being a chef spread. I do actually, but it doesn't matter lmao. Fuji thanked him for the meal, that does not mean that Ryo cooked it for him. Moreover, Fuji asked him if he tried the food there and that it's very tasty. I can't imagine someone asking a cook if he tried the food and informing him that the food there is tasty, when as a cook one would be able to realize that the food is tasty just by observing it or smelling it, like Sanji had previously done, let alone informing one that the food
there is tasty.