When we were there in May of '01, they had "Nut Crusted" fish 2 different nights - once was salmon, I think.  The coating tasted pretty much the same, though.  I had written to them to request the recipe & this is what they sent:
NUT CRUSTED MAHI-MAHI
from Bomas
Yield:  10 servings (1 5/8 cups)
½ c	Cashews, toasted and ground		
½ c	Pistachio Nuts, toasted and ground		
5/8 c	Pumpkin Seeds, toasted and ground		
1/8 c	Honey-roasted Peanuts, ground		
1/16 c	Cumin, toasted			
1/16 c	Coriander, toasted			
1/16 c	Curry Powder, toasted			
1/8 c	Sugar			
1/16 c	Cayenne Pepper			
Mix all ingredients in a large bowl.
Coat the mahi-mahi with olive oil.  Then coat with the nut crust.  Bake at 350 oven for 20 minutes.
If you'd like to contact them, write to:
Peggy.Gentry@disney.com
She was most helpful when I was asking for recipes last year.
Good luck!
Deb