I remember learning a while back that cats don't actually chew most of their food.
My old cat had all her teeth removed after a mouth infection and I was worried about how she would manage her food but she still quite happily eats dry food, wet food and meat.
They generally use their tongue rather than their teeth to break to food down.
In terms of not liking the treats it's all about personal taste, all cats are different.
I have one that will not eat any meat!
It's like someone forget to tell him that cat's are carnivores
I would just try a few different things, maybe a bit of chicken would go down well?