Charlie cooked Ron his unhealthy-looking pie (7,5)
I believe the answer is:
cornish pasty
'pie' is the definition.
(Cornish pasty is an example)
'charlie cooked ron his unhealthy-looking' is the wordplay.
'charlie' becomes 'C' (phonetic alphabet: alpha, bravo, charlie etc.).
'cooked' indicates an anagram (letters cooked into a new form).
'unhealthy-looking' becomes 'pasty' (pasty can mean looking pale).
'ron'+'his'='ronhis'
'ronhis' anagrammed gives 'ornish'.
'c'+'ornish'+'pasty'='CORNISH PASTY'
(Other definitions for cornish pasty that I've seen before include "Regional dish" , "West Country dish" , "West Country fare" , "West Country speciality food" , "local delicacy" .)