The refreshment room is just for name-sake and provides nothing decent to feed upon even in lunch hours, let alone the morning breakfast time. Disgusted by it, you'll go out to check if something decent is available when you'll bump into a few hotels nearby, just one of which will be decent looking (can't recall the name) but surprise! Its even worse!
Verdict: Avoid having food near the station. Not worth it. Better have something near the Golden Temple.