I'm sick of people judging what I eat

I'm 16M, and no shit I eat a lot, I'm still developing and every time I put a lot of food in my plate or my cereal bowl, I get "wow that's so much", or "leave some for the rest of us" from a family member of friend that's in my house. The worst thing is after it all, I'm still getting "you don't eat enough" when I don't completely finish the plate. I'm thin, and I'm really trying to gain weight, but it's really discouraging when people judge me all the time, it's getting better, but still happening.