Warm fowl for a pagan (7)
I believe the answer is:
heathen
'for a pagan' is the definition.
('heathen' can be a synonym of 'pagan')
'warm fowl' is the wordplay.
'warm' becomes 'heat'.
'fowl' becomes 'hen' (hen is a kind of fowl).
'heat'+'hen'='HEATHEN'
(Other definitions for heathen that I've seen before include "Non-religious person" , "Person lacking culture or moral principles" , "Infidel, pagan" , "Barbaric" , "Savage" .)