HKG has two of them, one airside and one landside (I don't think there are any in town, though). I think the airside one is the best one in the entire chain.

I understand that the folkloric "about to be condemned, torched, and razed by the health authorities" approach to Popeye's in the US is part of their appeal, but, silly me, I much prefer the quick service and clean conditions prevalent at the HKG outlets.