I also found this quite strange but through Google Lens, I got information about it from not one but some 2-3 different sites. I think you are right, I did not even pay attention to this. Its leaf is like the footprint of a frog. Maybe that is why it has this name. but still, why would it be called frog food idk. but it is edible for humans this is true I have seen people making curries of its leaves. :) Thank you!