I found a wonderful book the other day I wish I had had for my first child. Jennifer was a picky eater as a little child, unlike her younger brother, who would eat anything. The only problem I had with Geoffrey was that he was hard to fill up. He was a big baby and once he had enough to eat he was always happy. The book I found was First Meals by Annabel Karmel. It is beautifully illustrated and has lots of clever and interesting recipes. It was published in 1999, but I checked that it was still available on Amazon and it is. The author has a newer book about feeding babies.
Some of the things I learned about feeding small children was to make the portions small, make them attractive, and offer milk after the meals, if you have a small or picky eater. Two-year-olds often prefer milk to food and this can cause a milk anemia and also constipation. If you are a vegetarian and want to give a vegetarian diet to your children, this is worrisome. According to the medical doctor, Henry Legere, a child needs to eat "anywhere from three to seven times as much nonmeat protein to get the amount of protein found in a single serving of meat or cheese." There a few little children who would be able to eat that much, so a vegetarian diet for little children is something I have always advised against.
Fast foods not only are often loaded with calories, but they may not have the nutrition a child needs. Whenever parents told me they had an irritable child or one who is always tired, I would not only do a good physical examination, but also check a blood count and get a three day diet history. I was often amazed at the child's diet. Often just by working with the parents on a different diet for the child, I was told the little boy or girl became a completely different child. So an irritable, tired, or unhappy child can sometimes be "cured" by better meals, with lots of protein, fiber, fruits and vegetables. As children get older letting them help cook simple things and helping to plan the menus often makes a difference. Having them make special place mates and setting the table, so it is attractive can also help. . As a working divorced, working M.D., I planned menus for the week and did the shopping on weekends. Both children became great cooks as adults saying because they liked delicious food that was what they had to do. We ate well, but not elegantly or with great variety.