Bread Bowl Quiche Lorraine

Name: Bread Bowl Quiche Lorraine
Ingredients: One 9-inch round sourdough boule (about 1 1/4 pounds); 3 tablespoons extra-virgin olive oil; 12 ounces French raclette or other soft Swiss cheese, thinly sliced; 4 ounces thick-cut smoked bacon, cut into 1/2-inch pieces; 1 tablespoon fresh thyme leaves; 1 large shallot, chopped; 2 ounces Gruyere, finely grated; 1 3/4 cups half-and-half; 1 teaspoon kosher salt; 1/8 teaspoon cayenne pepper; Pinch of freshly grated nutmeg; 4 large eggs, at room temperature