Is it okay for me to mix Honest Kitchen to my dog's kibble?

It shouldn’t hurt your dog to mix them together, especially when first introducing the HK food.

I would rather have you feed Honest Kitchen and add some raw beef, chicken or turkey to that for one meal. I think if you look for sale items in the meat department, you would be able to feed HK and stretch it for a longer period of time by adding inexpensive cuts of meat. It would certainly be a healthier alternative for your dog, if you can manage it. Sometimes if you talk to the manager at your local grocery meat department, they can tell you when they do mark downs on meat that is coming to the end of it’s “sell by” date. It’s perfectly ok to feed dogs meat that is a few days past it’s sellable date or you can freeze it for later use.

Adding HK to kibble is better than just feeding kibble though, but wouldn’t be my first choice in feeding.