(certain chips, sweets, etc), chicken nuggets (certain chicken tenders too), fries, and pizza.
my parents don't try any methods to help him eat more or differently & never have. i don't know if they even would or know how to go about it. they're very stubborn and say he is at a 'perfect weight' but i've seen him only eat once-twice a day and he usually doesn't even finish his meals.
he has some other behavioral problems and seems like he is underweight.
my question is, how can i encourage him to eat differently? he refuses any real food. he only wants to eat out at fast food resteraunts and that's what he is allowed to do at home. he will starve himself before trying something else or if his choice of food is unavailable.
any advice to help him would be nice.