Hungry?

We have lots of nicknames for Blake - the fussy one, the difficult one, the non sleeper, the grunter. He is our most difficult child. Brandt was sweet and quiet and good natured. Campbell was sweet and a little more challenging and not quite as good a sleeper. Blake is fussy and doesn't sleep and screams, a lot. I've heard people talk about difficult children before and here he is. He is so different from our other two - 100% boy, like a bull in a china shop.
Tonight I am wondering if some of his screaming is because he is hungry. I feed him what I think should be enough and he always seems to be happy with it. Tonight I put him in the highchair and gave him some puffs. He ate them all so I gave him some cooked carrots and he ate most of those. I cut up half of a grilled cheese and gave it to him and sat down with him. He ate it and had some juice while we ate dinner and I gave him a couple of fries. In the end he had five or six fries, the grilled cheese, more puffs and some yogurt puffs before he was finally done.
When I took him out of the chair I expected to find quite a bit of food in his chair. There were three pieces of carrots in the chair and a couple of puffs on the floor. He wasn't wasting any food! Poor Blakey, have I been starving you?
He has been playing pretty well since dinner tonight, much less screaming.