Harvest Vegetable Bake Recipe

2-1/2 to 3 pounds boneless skinless chicken thighs 2 bay leaves 4 small red potatoes, cut into 1-inch pieces 4 small onions, quartered 4 small carrots, cut into 2-inch pieces 2 celery ribs, cut into 2-inch pieces 2 small turnips, peeled and cut into 1-inch pieces 1 medium green pepper, cut into 1-inch pieces 12 small fresh mushrooms 2 teaspoons salt 1 teaspoon dried rosemary, crushed 1/2 teaspoon pepper 1 can (14-1/2 ounces) diced tomatoes, undrained