Bad actor in shambles (3)
I believe the answer is:
ham
'bad actor' is the definition.
(I've seen this before)
'in shambles' is the wordplay.
'in' says the answer is hidden in the clue.
'HAM' is hidden in the letters of 'shambles'.
(Other definitions for ham that I've seen before include "Overacting actor" , "Cured pig's meat" , "Bad actor; Noah son" , "Meat from a pig" , "Meat of the hog" .)