Red and Green Lasagna

Name: Red and Green Lasagna
Ingredients: One 3½-pound chicken, cut into 8 pieces; 1 medium onion, chopped; 1 medium celery rib with leaves, chopped; 1 medium carrot, chopped; 2 sprigs fresh parsley; ¼ teaspoon dried thyme; ¼ teaspoon whole black peppercorns; 1 bay leaf; 2 tablespoons olive oil; 1 large onion, chopped; 2 garlic cloves, minced; One 28-ounce can tomatoes in juice, chopped, juices reserved; One 6-ounce can tomato paste; 1½ teaspoons dried basil; 1½ teaspoons dried oregano; ¼ teaspoon crushed hot red pepper; 8 tablespoons (1 stick) unsalted butter; ½ cup all-purpose flour; ¼ cup heavy cream; ¼ teaspoon salt; ¼ teaspoon freshly ground white pepper; Two 10-ounce packages frozen chopped spinach; 1 cup fresh bread crumbs; ½ cup heavy cream; 1½ cups ricotta cheese; ½ cup freshly grated Parmesan cheese; 2 large eggs, beaten; 1/3 cup chopped fresh parsley; ¼ teaspoon freshly grated nutmeg; ¼ teaspoon freshly ground black pepper