I feed my Fritz homemade raw chicken, with one meal of Fancy Feast Classic.
If you are interested in keeping him on a chicken diet the link Linda gave you is Lisa Pierson recipe. It's easy to make and my Fritz loves it. I also order raw frozen rabbit from whlefoods4pets.com for Mary she raises them.
You can buy the ingredients to add to the chicken or you can buy pre measured packets. Please don't ever feed cats cooed bones as they can splinter and cause problems.
Can I ask you why your kitty had black diarrhea? Fritz started having black diarrhea so I took him to the vet and as soon as we had a plan to take a sample in he started having normal poop for two times this morning it was black again but not diarrhea.