Conceited Goran disturbed in painting (8)
I believe the answer is:
arrogant
'conceited' is the definition.
(I've seen this before)
'goran disturbed in painting' is the wordplay.
'disturbed' is an anagram indicator (the order of letters is disturbed).
'in' is an insertion indicator.
'painting' becomes 'art' (painting is an art).
'goran' anagrammed gives 'rogan'.
'rogan' inserted inside 'art' is 'ARROGANT'.
(Other definitions for arrogant that I've seen before include "Conceited, self-important" , "Overbearing with exaggerated sense of superiority" , "Over-cocky" , "Cocky" , "Overbearing; conceited" .)