I didn't understand EVERY word you guys said, but Defender Medals have nothing to do with REALLY Special Dragon Chows.
But trying to solve your problem, I give you some info and SWF now:
Some of the info above could be false, but I know that 263 WORKED before, but I think it requires DA...
Name: REALLY Special Dragon Chow
Item ID: 907
Quest ID: 250, 164, 193, 263, 264
some other REALLY Special Dragon Chow quests do not require DA, but they are often Titan Fights and that doesn't matter.
So I recommend you to use Quest Reward Cycler (Google or you maybe have it already on your computer)
or use Advanced Reward Rusher (which is still unstable, but works 100% correctly).
See video how Advanced Reward Rusher works:
See the attachement below
Virus scan 1
Virus scan 2