Hubby deals with similar issues. Due to the kidney failure at 13y/o, he had to go on a diet of: 15g of protein a day; mostly salad stuffs and sugar; carbs that were protein free (so, no peas etc). And that was his diet for 6 years.
And now, it's a nightmare if he is presented with salad foods, though he's not as bad as he was...but meat/eggs/cheese, he still craves and eats too much off them at times.
36.5 kg /80.3 lb Middle-Finger DL (right hand)...