Chicken soup cooked wrong (7)
I believe the answer is:
poussin
'chicken' is the definition.
(I've seen this before)
'soup cooked wrong' is the wordplay.
'cooked' indicates an anagram (letters cooked into a new form).
'wrong' becomes 'sin' (wrong can mean a sin or crime).
'soup' is an anagram of 'pous'.
'pous'+'sin'='POUSSIN'
(Other definitions for poussin that I've seen before include "He painted" , "young bird" , "17th-century French painter" , "Small chicken; painter" , "Young chicken for eating - French painter, d. 1665" .)