All my JD's love the frozen krill I feed them. I buy the big krill and they go crazy. Especially my big male.
They also get Ocean Nutrition Cichlid Omni Flake
Hikari pellets
Frozen bloodworms
frozen squid
frozen clams
frozen plankton
frozen mysis
and frozen beef heart
I also have some frozen crab claw meat that we eat. I usually break off a piece and throw that in. My big male tears it apart. That is his big treat. He only gets it once verey few weeks.
I have found JD's not very picky about food. If you keep it as a treat and only feed it once in a while. They will go wild for it.
But keep in mind that a varied diet will keep it healthy and colorful.