Picked nose casually after church (6)
I believe the answer is:
chosen
'picked' is the definition.
(I've seen this before)
'nose casually after church' is the wordplay.
'casually' is an anagram indicator (I've seen this in other clues).
'after' is a charade indicator (letters next to each other).
'church' becomes 'ch' (common abbreviation).
'nose' is an anagram of 'osen'.
'osen' put after 'ch' is 'CHOSEN'.
(Other definitions for chosen that I've seen before include "Elected, picked" , "If you're one of these few, you're very privileged" , "Selected, preferred" , "Selected - Japanese name for Korea" , "Selected, picked" .)