Separate your egg whites from your eggs. Mix with 2.5 cups of kosher saltYour salt mixture should feel like sand. If it is too wet then add more salt little by little.
Season the inside and outside of your fish with black pepper.
Thinly slice your lemons and layer your lemons and herbs in the cavity of the fish. Save 3 slices to lay on the top outside layer of the fish.
Cover the entire fish with your sandy salt mixture
Cook at 400 degrees for 15 minutes.
Check the crust after 15 minutes. The fish is ready when the salt crust is hard when you tap it with a fork and starting to brown around the edges. Cook up to an additional 10 minutes if need be.