Which kibbles are you switching from and to?  Toki will eat her Fromm kibble plain but really loves it when I add a topper. I use the Stella and Chewys carnivore crunch which is basically freeze dried chicken or duck ( it crumbles easily and smells nummy... To Toki anyway). Sometimes I'll mix a little canned food (just enough to coat).    
A lot of grain-free  and/or premium kibble like Blue buffalo Wilderness, Fromm, Acana, etc are considered to be highly palatable to dogs. I've also heard of some people sprinkling a smidge of Parmesan cheese over the kibble. I enjoy preparing Toki's meals but if you just want to feed straight up kibble, You may just need to keep trying different kibbles to find a brand/ flavor your pup likes.     |