Sent your post to an ER Vet Tech here is her response:
If the seizure was not severe, if it lasted less than 30 seconds to one minute, usually the attending vet will request the owner watch kitty for further signs of illness or another seizure....if another seizure occurs, the owner needs to get kitty back to the vet for a full blood profile and possibly neurological exam. Then phenobarbitol is usually prescribed to help control the seizures or reduce them. The goal with phenobarbitol treatment is to expect no more than one seizure in a three-month time period, or to expect them to cease altogether.
However, sometimes specific organ function needs to be carefully monitored in the event that the organ disfunction may be the cause.
The sudden chewing behavior could be a result of pending seizure activity, or possibly a neurological deficit, could also be a form of pica, in which the diet should be evaluated to ensure it is sufficient in nutrients and vitamins/minerals. Again, bloodwork would be helpful to determine if there is anything out of range with mineral deficiencies or organ disfunction.
The owner needs to attempt to cat-proof her home from the objects kitty is chewing on, and needs to cover/protect all electrical cords. There are "sleeves" available at hardware stores for cords, etc. She should also try to determine if any recent events or severe stressful situations have occured that may have led up to the seizure, anything unusual that occured directly before the seizure event.
Advise owner that if another seizure occurs, do NOT handle kitty, but to place pillows around her to protect kitty from harm during thrashing, etc....call ER vet immediately, and note how long the seizure lasts.
If the seizure lasts for more than one minute, ER hospitalization is necessary for sedation (usually valium) and further diagnostics (i.e., bloodwork, detecting sources of infection, viral, etc).