What would help most is knowing how long it's been a problem, and what changes, if any, were made before it started.
For example; if this is a new chain on a very old chainring (doesn't look that way) then that would point to some possibilities.
One diagnostic that you might try. Remove the front derailleur, (or slip the chain put and let the FD swing as far inboard as possible so it's out of the way), and manually shift the chain back and forth with your fingers and see if it settles nicely. If finger shifting works, then you know it's simply a FD adjustment issue.
BTW- something about the photo bugs me. Please measure a 12" (24 links) length of chain with a ruler. Tell us how far beyond the 12" mark the 25th pin is (should line up exactly like the first, but will be farther out on a worn chain.
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
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Last edited by FBinNY; 09-25-14 at 05:38 PM.