I'm interested to know what other 4 year olds will/won't eat.
My ds1 (4 1/2) has a healthy but very boring diet. Plenty of fruit, a bit of raw veg, pasta (occasionally with tomato sauce or pesto but usually just cheese), bread, crackers, cereal, cheese. (He will, of course, eat anything sweet - biscuits, chocolate etc.)
Until about age 2, he ate anything, then gradually he 'went off' things until we were left with a pretty narrow range. He's reluctant to try anything new and doesn't eat cooked veg.
I know toddlers are known for fussy eating, but at what age do they usually start eating a bigger variety again?