Doctor rubbishes any chips I munched (9)
I believe the answer is:
physician
'doctor rubbishes' is the definition.
'physician' can be an answer for 'doctor' (I've seen this before). I'm unsure of the 'rubbishes' bit.
'any chips i munched' is the wordplay.
'munched' indicates anagramming the letters (letters munched or crushed into a new order).
'any'+'chips'+'i'='anychipsi'
'anychipsi' anagrammed gives 'PHYSICIAN'.
(Other definitions for physician that I've seen before include "Medic" , "A doctor, as in ''........, heal thyself''" , "Licensed medical practitioner" .)