Easy Chicken Noodle Soup From A Leftover Roasted Chicken

Ingredients

• 1 roasted chicken carcass, meat removed and reserved for the soup
• 1 tablespoon olive oil
• 3 quarts (12 cups) water
• 1 medium carrot, peeled and coarsely chopped
• 1 medium celery stalk, coarsely chopped
• 1/2 medium yellow onion, coarsely chopped
• 2 fresh thyme sprigs
• 1 bay leaf
• 1/2 teaspoon whole black peppercorns
• 2 medium carrots, peeled and medium dice
• 2 medium celery stalks, medium dice
• 1/2 medium yellow onion, medium dice
• 1 teaspoon kosher salt, plus more for seasoning
• 1 teaspoon finely chopped fresh thyme leaves
• freshly ground black pepper
• 1 cup dried egg noodles (about 2 ounces)