Here's my update after spending a couple months with this very picky two year old man!
His favorite food of all time is raw chicken hearts, which luckily I've been able to find in quantity at a local butcher shop.
When I can't get those, he'll eat cooked boneless chicken, which I have to cut into the exactly correct size pieces. Too small and he's not interested, but too big and he'll drag the food all over the room before eating it.
I put mazuri on everything and he's fine with that.
Otherwise, he loves the freeze dried liver treats. Sometimes if his appetite is bad I can lure him with one of those.
He does like the Stella and Chewy freeze dried raw food, but it costs a fortune! I don't know who is feeding their pets that stuff, maybe for a tiny kitty it wouldn't be cost prohibitive.
One thing he won't stand for is a bowl that's almost empty. If the bowl only has a few bites left at the bottom, that really bothers him.
I thought he should have a more varied diet, but he rejects most other food. He won't go for eggs or smoked salmon. One time he ate some sausage, but that doesn't seem healthy to me.
Very, very picky! But I'm starting to crack the code haha