Preheat the oven to 400 degrees F.
Prepare the bread dough as directed, cutting the dough into 2 pieces.
Using a lightly floured rolling pin, roll the dough out into 2 rounds.
Coat the pizza paddle with the sea salt. Place 1 dough round on the paddle spread with coarse sea salt.
Spoon the filling onto the center of the dough round laid out on the pizza paddle. Using your fingers, dab a little extra-virgin olive oil all around the edge of the dough. Fold each round over itself to make a half-moon shape. Using your fingers, crimp the edges, sealing the calzone.
In a small bowl, use a fork to beat the remaining 1 egg. Using a pastry brush or your fingers, dab the top of the calzone with the egg mixture, which will help the top turn a beautiful golden brown.
Place in the oven and cook until the dough is cooked through and golden brown, about 25 minutes. Cut into 4 pieces and serve immediately.
Bring the dough together by hand and turn out onto a floured board or marble surface. Knead for 6 to 8 minutes, until you have a smooth, firm dough. Place the dough in a lightly oiled bowl and cover with a towel. Set aside to rise in the warmest part of the kitchen for 45 minutes.