I don't think it's the same fruit, since their little repeated phrases are usually tied to the fruit they ate, and he says Ton Ton, while she used to say Kilo Kilo.
But yeah, seems like they both ate weight fruits, which seems super redundant. Especially since, in the very same arc, we also have a guy that manipulates gravity.
Then again, they do have a guy that makes artificial fruits, so maybe it actually IS some kind of replicated fruit.