Disturbance in Cajun restaurant (6)
I believe the answer is:
unrest
'disturbance' is the definition.
(I've seen this before)
'in cajun restaurant' is the wordplay.
'in' says the answer is hidden in the clue.
'UNREST' can be found hidden inside 'cajun restaurant'.
(Other definitions for unrest that I've seen before include "State of discontent" , "Discontent verging on insurrection" , "Feeling of anxiety or turmoil" , "Disturbance or dissatisfaction" , "Discontent, disturbance" .)