God is a chicken in Spain (6)
I believe the answer is:
apollo
'god' is the definition.
(Apollo is a Greek god)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for apollo that I've seen before include "Greek sungod, son of Zeus" , "London theatre" , "Greek god of light, poetry, music, healing and prophecy" , "Handsome Greek god" , "Greek god of light, son of Zeus" .)