I have 2 children with ASD, they are both incredibly fussy, which I know is quite common.
But they are also not even interested in food they like most of the time. Every meal is a battle to get them to the table, and to get them to eat even a small amount of food. They don't snack at all because when I offer one they usually say no.
They just don't seem to feel hunger at all. The eldest one is particularly bad for this, and as she's an 11 year old girl this worries me.
It is particularly noticeable over Christmas as they received lots of chocolate, and of course we have lots of other nice food in the house (which I bought specially for them as I know they like it) and it's all sitting there untouched.
Neither child is underweight so their paediatrician is uninterested when I mention it, but both are very skinny, and the eldest is on the very bottom of the healthy weight range for her height.
I've tried cooking and baking with them, it makes no difference. In fact the eldest loves to bake, and she regularly makes cakes or biscuits that sit there uneaten and they eventually get thrown away 
Is anyone else's child like this? How do you deal with it?