It's the lunchtime version that people rave about. Comes in 4 varieties on the Celebration and 5 on the Mardi Gras. No Nashville Hot on the Celebration. It also comes in white meat, dark meat and grilled.
Sid had the breakfast version with the egg added on a biscuit. The lunchtime version comes on a soft roll. I once got it plain and added the habanero sauce from the Blue Iguana to kick it up a notch. Many rave over the chicken sandwich at Coco Cay, and I think Shaq's is better.