how much does your 4 or 5 year old eat?

[popsycal]

DS1 eats so little. Part of the problem is getting him to sit still for more than a minute. But increasingly, he is sitting better but he still eats so little.

As an example.
Today he had 1 weetabix for breakfast - which is more than he usually eats.
In his packed lunch, he ate 2 quarters of a ham sandwich, a yoghurt and a handful of blueberries
A few mouthfuls of spaghetti bolagnese (which he really enjoyed - which is unusual as he rarely expresses a positive opinion abotu food these days).
he didn't eat his fruit at school (oranges)

He normally eats more fruit in a day than this but quantity wise, this is quite a good day.

I am very chilled out about it normally but it is more than a passing phase. he likes most things but just doesn't eat them!

Any comments/ideas appreciated

dd (5) often picks at food. She has :-
2 small bowls of Shreddies for breakfast,
biscuit or fruit and water at break,
school lunch - today sweet and sour chicken and noodles plus banana - which I'm told she eats well or if at home half a bread roll with ham or salmon , 3 or 4 cherry tomatoes and a few slices of cucumber,
dinner - tonight sausage mash and broccoli, of which she ate a tablespoon of mash and 2 or 3 chunks of sausage -and yoghurt.
She's petite too , wonder why !

LIZS sounds similar to ds1
he loves tomatoes, cucumber, brocolli, mash, raw carrot, raw pepper, any other fruit
BUT WON't EAT IT if in his lunch box
He is shattered at dinner time too eat much.....

He was such a porky baby and toddler but is now skina nd bone