Tortas at ORD is my favorite, but I also like Cadillac at IAH (Priority Pass and a nice alternative to Landry’s). Salmon is great at Yankee Pier SFO. Don’t care for any of the OTG places in EWR. Honestly, I’m not impressed by the options at LAX either, though the Fatburger in T6 is within walking distance of UA T7. Finally, I love Shakeshack in DEN. Always nice.
Not a hub, but Vienna (Cuban) in MIA is great…such good coffee and sandwiches.