All touched out - I agree that kale and chia seeds (or equivalent) might be seen as condescending to those who choose to eat differently, but as someone who has historically volunteered on supervising school lunches, packed lunches are mostly packed with crap. Most kids have high sugar juices, cakes, biscuits, chocolate bars and/or crisps in their boxes every day, which is unhealthy and take the place of alternatives like fruit, veg and healthy proteins and carbs. Kids aren't supervised as to the order they eat in, so they eat the crap first and then eat a fraction of the good stuff. Then we wonder why they don't concentrate well in the afternoon, once the sugar dip comes about an hour later and they are hungry again because they were full up on crap. PP said they don't need those things every day and I completely agree. We are breeding a generation of junk food addicts.
My kids have a sandwich/wrap with chicken, tuna, cheese etc, or pasta, sometimes soup in a flask if I've made it, with bread or roll. Plus salad (cucumber, carrot, pepper, tomatoes) fruit (berries, banana) and a yogurt ( no added sugar Yeo ones are fab). They get water to drink at school/pre school.
My kids used to hate salad, but I put it in, day in day out, and encourage them to try it. They now have a good go at it and know they need to eat a decent amount of that before they move into pudding, just like at home.
I do give my kids treats, but it is on my terms and when I want to. I don't want them filling up on crap when they need loads of energy to face the day. Our school has now banned all sugary food, chocolate bars, crisps and sweet drinks (water only). Funnily enough, kids are fine with it, because no one has boxes of crap with which to compare.