We have three boys at home right now, I watched one son eat a 3 lb. bag of Doritos (which I did not buy) while my Wife was fixing dinner. I told him that he should stop eating the Doritos because we would be eating soon, he told me he would be hungry and just kept eating.
Every day meals consist of 5 lbs plus of some form of meat protein along with potatoes mostly sweet and fresh or canned vegetables and a salad. If they can get it they will normally have a two plates of food at the meal. I have even had parent call and thank me because our kids eat so well when visiting another home, they stated that their kids are picky eaters and it was so nice to see a child that eats well. LOL!