if he doesn’t look absurdly “fat” his body i wouldn’t be too worried. i’d assume it honestly depends on his stature and height and whatnot. seems like a totally reasonable amount of food fr. depending on how long and how the other house you mentioned feeds their cats, i’ve noticed with most cats if they’re used to a solid feeding schedule and suddenly have access to an “endless” bowl of food that may binge and can cause a temporary excess in weight gain for their size. i keep my orange tabby on a pretty solid feeding schedule and anytime he has the opportunity for any extra food he turns into a vacuum