My 13 year old is exactly the same , it’s like a food phobia , he also checks his food before he eats it - he will eat the same things daily - breakfast- crumpets , toast, boiled egg or waffles , lunch - cheese wrap / peanut butter sandwich, crisps , choc bar , fruit peeler / fruit strings , evening meal - chips / waffles / chicken nuggets , crusty bread/ wraps , White pasta with cheese , pasta and sauce , crisps , biscuits, apples , angel delight , egg custard , and will only drink water , milk or milk shake , if we go out it’s literally bread and butter and chips , and the same even on Christmas Day , I get so stressed ! I’ve tried absolutely everything even down to bribery - nothing works , I try not to stress now , he’s a good healthy weight and isn’t lethargic etc it’s just a bit embarrassing at others houses and limits him wanting to eat at friends , especially when some of his mates literally eat anything and everything, I did google it and it’s a common problem so we are not alone !