Is a +1 feeding in the mix?
What a little Mr. Fussy PantsI even use his #1 favorite treat (Churu's) on top and I don't know how he does it, but he can lick every bit of the Churu without eating 1 bite of the actual food.
When I first adopted him, he'd eat anything! Now he's a freaking gourmet! (and a picky one!)