My dad eats small proportions

Ok I feel terrible

My dad gives me a bigger proportion and I can’t even finish the thing so I try saving half of it for my dad but he just throws it away I’m worried about him

He eats small portions of food and it scares me

Update:

I asked dad if he was having anything to eat at the pub (he’s going out, his friend’s stepson’s birthday)

Dad: “why?”

Me: cause I was thinking of saving half of the Chinese for you

Dad: Don’t worry about me kiddo if I wanted a Chinese I’ll get one

Me: ok (still feeling worried though)

I hope he gets food for himself and he’s not starving himself