Preheat the oven to 400 degrees F.
In a large saute pan, over medium heat, add 2 tablespoons of the oil. When the oil is hot add the onions and celery
. Season with salt and cayenne. Continue to saute for 3 to 4 minutes. Add the shrimp. Season with salt and cayenne. Saute for 3 minutes, or until almost cooked through. Add lemon zest
. Remove from the heat and cool completely.
In a mixing bowl, combine the shrimp mixture, garlic and cornbread. Mix well. Stir in the chicken stock
. Let the dressing
sit for 20 minutes. If the dressing is too dry add more liquid. Season the flounder with the remaining olive oil, salt and cayenne. Place the fish, skin side up, on a parchment paper lined sheet pan
. Place 1 cup of the dressing on half of each fillet. Fold the fillets in half over the dressing and press down lightly to secure. Place the fish
in the oven and bake for 10 to 15 minutes. Remove from the oven and garnish
with parsley. Serve with Steamed Haricots Verts.