Yep. Time for a new ignition coil.

If the timing belt hasn't been changed in the last year or so, have it changed very soon. The service interval is 90K miles or every six years, which ever comes first. Failure of that belt will ruin your day.

Given the age of the car, you're due for your third timing belt, tensioner and water pump.

My point in mentioning this is that your timing belt may have slipped, throwing off the ignition timing.