Chicken Cacciatore Lasagna

Name: Chicken Cacciatore Lasagna
Ingredients: 1/4 cup extra-virgin olive oil, plus more for drizzling; 2 1/2 pounds skinless, boneless chicken thighs; Kosher salt and freshly ground pepper; 2 onions, finely chopped; 4 cloves garlic, minced; 1 tablespoon minced fresh rosemary; 3/4 cup dry white wine; 4 bay leaves (preferably fresh); 2 28-ounce cans whole San Marzano tomatoes, crushed by hand; 1 1/4 pounds fresh lasagna noodles; 4 tablespoons unsalted butter, plus more for the dish; 1/4 cup all-purpose flour; 4 cups whole milk; Pinch of freshly grated nutmeg; 1 1/2 cups grated Parmesan cheese, plus more for topping