This condition is known as hemifacial spasm
.It may be due to a stressed facial nerve
, could be from strain due to the lack of sleep.It will conclude itself in time.
If it becomes regular or more distributed,it can be a sign of neurological disorder.However if it continue,,go for a detailed check up like CT,MRI
,EMG etc and consult a doctor.
Wish you Good Health..
Thanks & regards