Mine is ten, but he would too, if he could get away with it, which his can’t 🤣
My ten year old doesn’t like sandwiches, but if he does he has to have a specific white bread, chicken or ham and nothing else. He probably would like a jam sandwich but school would tell him off and we make clear the acceptable boundaries of a lunch.
I have a simple bit of paper with a list on in the kitchen with lunchbox guidance / rules on it.
Sandwich - must have protein and salad (little one has difficulties so he’s allowed off that)
One fruit
One veg
one or two dairy options
smoothie if wanted
once a week crisps
once a week chocolate biscuit bar
once a week mini pizza instead of sandwich
if they have an after school activity they can take a snack for that, cereal bar, fruit snacks, extra protein snack.
They are welcome to take fruit or veg for morning break but they don’t bother.
I find with mine that if I make it abundantly clear what the guidance is that I don’t have issues. We discuss sandwich fillings (pastrami, cooked chicken, cooked turkey, ham, sliced decent cheese) and the other elements so they choose what they want, as long as it fits the overall format.
Their lunches aren’t perfect, I’d prefer them never to eat processed cold meats, but we don’t often eat sausages or bacon and we try hard on fibre so it’s manageable.