My son has certain 'tastes' & dislikes- its about textures for him, (turns out years later he has aspergers mildly) for years we saw dieticians(in 2 different hospitals,at same time) - at one point he would only eat yogurts- and they said just to feed what he DID like, and worry over the healthy aspects later- so long as he was eating and gaining some weight- his preference was for bacon, chicken, sausages,chips etc all what we consider 'unhealthy' stuff, but he was happy, and slowly gained more weight, he gradually added some other foods, not veg though,but he will have occasional fruit, but he's now 18, he has grown in height quite a bit, he's an average weight, and doesn't have any hang ups over food- he knows what he likes & what he doesn't, he will be ok.And I'm sure your GC will be too Grammajules, its just best not to make a big deal out of it i found.