It's for sure better than most Disney dining seafood, IMO, although yes, it is a chain, but then most eateries are these days.
The prices are moderate, certainly cheaper than Flying Fish or Bluezoo (though it is NOT not nearly as good as Bluezoo - Probably the best restaurant on Disney property).
It isn't disney so reservations are only made a day or two in advance and that shouldn't be a problem.
Many people view Disney dining as unique when truth be told it's all very generic now (at least compared to the past). I don't mean it's all bad or substandard or any other derogatory terms, just that most signature restaurants offer variations on all of the same food with the supplies coming from the same vendors. Not much different than a "Disney" chain really. So looking elsewhere for better or different food stylings at more competitive prices is certainly not a bad idea.