Comedian in panic, I'm occasionally laid back (5)
I believe the answer is:
comic
'comedian' is the definition.
(synonyms)
'in panic i'm occasionally laid back' is the wordplay.
'in' indicates a hidden word.
'back' says the letters should be written in reverse.
'cimoc' is hidden within 'panic im occasionally laid'.
'cimoc' backwards is 'COMIC'.
(Other definitions for comic that I've seen before include "Stand-up comedian" , "Funny, droll" , "Wag" , "Funny, ridiculous" , "Funny (person, paper)" .)