My son is very fussy eater. He does not like anything in food. We have difficulty in finding food that he likes to eat. Meal times are dreadful times as we have to struggle to feed him. He also does not feel hungry also but otherwise he is a normal kid.
Keep on trying different food and he may sooner or later give in to temptation. Expose him to different foods. Just keep doing that.Be creative in food choices and food display.
Kids can have more sensitive taste buds than adults.I say go with the flow and give up on the creativity, as long as he's getting enough nutrition overall.My nephew ate hardly anything and he is now a hale and healthy thin 12-year old.