Is it normal that I don't eat much and my face is getting puffier?

I'm an athletic guy and i love doing sports. My body is like zac efron's in his early 20's. I'm 21 and i just recently realized that i'm starting to get face fat. My cheeks are getting puffier and my face is widening even though i drink lots of water and i don't eat more than i used to. I have been told that i look more of a man now but i still prefer my skinny face and the more defined cheekbones i used to have. Any clues?
Is it normal that I don't eat much and my face is getting puffier?
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