Avoiding chips, for instance, with pints? Peg Rock! (12)
I believe the answer is:
sidestepping
'avoiding chips' is the definition.
'sidestepping' can be an answer for 'avoiding' (sidestepping is a kind of avoiding). I'm not sure about the 'chips' bit.
'instance with pints? peg rock' is the wordplay.
'instance with' becomes 'side' (I can't explain this - if you can you should believe this answer much more).
'rock' indicates anagramming the letters.
'pints'+'peg'='pintspeg'
'pintspeg' anagrammed gives 'stepping'.
'side'+'stepping'='SIDESTEPPING'
'for' acts as a link.
Can you help me to learn more?
(Another definition for sidestepping that I've seen is " Avoiding an issue".)