Cinnabon was connected to Doc Brown's Chicken, and shared the same kitchen facility. It faced toward the StarWay. You may be thinking of Cinnabon in CityWalk (located directly in front of the drop-off area), which is still open to this day.
The food itself wasn't too bad. It was a theme park dining option, so you can't expect too much. If anything, the nostalgia of the venue was the most enticing factor. It's insanely peculiar it stuck around for nearly 7 years after BTTF closed.