Friend with cover for pasty (6)
I believe the answer is:
pallid
'pasty' is the definition.
('pallid' can be a synonym of 'pasty')
'friend with cover' is the wordplay.
'friend' becomes 'pal' (pal is a kind of friend).
'with' says to put letters next to each other.
'cover' becomes 'lid' (lid is a kind of cover**).
'pal'+'lid'='PALLID'
'for' acts as a link.
(Other definitions for pallid that I've seen before include "White in face as from illness" , "White in face, perhaps ill" , "Colourless, wan" , "Insipid; lacking colour" , "Pale, insipid" .)