Junkie right to punch church leader (8)

'junkie' is the definition.
I know nothing about this answer so I can't judge whether this works.

'right to punch church leader' is the wordplay.
I cannot really see how this works, but
'right' could be 'ok' (both are affirmative answers) and 'ok' is present in the answer.
'church' could be 'ce' (abbreviation for Church of England) and 'ce' is present in the remaining letters.
'leader' could be 'head' (head is a kind of leader) and 'head' is located in the answer.
No letters remain.
This explanation may well be incorrect...

Can you help me to learn more?