I swear it was easier when they were picky toddlers! I don't argue about breakfast, I shove egg and toast in front of them. I also put a multivitamin (flurodix) in front of them and they know they might just as well eat and take the damned things.
Lunch - they don't take it with them to school, or any food for that matter, they say they don't have time. I think they tend to sneak a packet of sodding Haribos off with them in their pocket.
I tend to make them something when they get home - stir fried rice with veges went down well last week, as does chicken congee, or left over maccy cheese - and I get them to have two types of fruit or veges with it - eg, apple, tomato, cucumber, carrot sticks, grapes, etc.
They have started being a lot better about drinking water during the day, as their skin broke out something wicked, and whaddya know, when they started drinking more water like their unsympathetic Mum suggested, it cleared up.
Tea - meat and 7 veges, spag bol with carrot, courgette, mushroom, capsicum and onion in it, stirfries with copious amounts of veges, and takeout once a week, and a less vegeneurotic meal on Wednesdays, like maccy cheese - or a lasagne with a salad.
I think they have chips, coke, and ice-cream (for dessert) most, if not all days.
It's all a delicate balance of negotiations and nagging.