French Chicken Pot Pies recipes

Name: French Chicken Pot Pies recipes
Ingredients: 4 split (2 whole) chicken breasts, bone-in and skin-on (2 1/2 pounds); olive oil; ground black pepper; kosher salt; 6 tablespoons (3/4 stick) unsalted butter; 4 leeks, chopped, white and light-green parts only (should come out to 4 cups); 5 carrots, 1/2-inch diced (should come out to 2 cups); 4 teaspoons garlic, minced; 8 ounces cremini mushrooms, stems discarded; sliced; 1/4 cup minced fresh tarragon leaves; 1/3 cup all-purpose flour; 2 1/2 cups good chicken stock, preferably homemade; 6 tablespoons cream sherry; 1/2 cup heavy cream; 1 (10-ounce) package frozen peas, such as Bird's Eye Garden Peas; 3 sheets frozen puff pastry, such as Pepperidge Farm (2 boxes), defrosted; 1 extra-large egg beaten with 1 tablespoon water, for egg wash; fleur de sel