This noise just started 2 or 3 rides ago. It's a clicking/creaking sound whenever the drive-side crankarm is in the forward position, say between 2:00-4:00. Happens on every single pedal revolution, regardless of whether the chain is on the big or small chainring. It sounds to my ear almost like a stiff link, though the fact that it happens with every single turn of the cranks would seem to rule that out. Definitely sounds like it's emanating from the crank/bottom bracket area.

Bike is relatively new, has fewer than 2500 miles on it. Chain has not yet been replaced, but has been lubed regularly though infrequently as per the NFS instructions, and gets wiped down religiously after every ride. Drive train is all Campy Record 11-speed.

I lubed my pedals and pulled/lubed/reseated the small chainring bolts. No change, still makes the same noise.
I have not yet pulled/lubed/reseated the large chainring bolts nor pulled the crankset, though I'm thinking those should be my next steps.

Actually I'm wondering if just buying a new chain should be my next step...

Any ideas? The noise is remarkably consistent/regular/predictable ...which makes it so unlike any other mechanical noise I've ever had to diagnose on a bike that I'm at a complete loss!

Thanks.