Set a large 6-8 quart soup pot over medium heat. Add the oil. Generously salt and pepper the chicken thighs on both sides. Place them skin-side down in the pot. Brown the chicken skin, then flip and cook the chicken another 3 minutes. Remove the chicken from the pot and set aside.
Place the onions and garlic in the chicken fat. Stir and saute for 3-4 minutes. Then stir in the celery, carrots, and thyme and saute another 2 minutes.
Add the chicken broth, bay leaves, and turmeric to the pot. Then place the chicken thighs in the broth. Season with ¾ teaspoon salt, and ¼ teaspoon black pepper. Stir well. Cover and simmer for 30 minutes. (Turn the heat down a little, if needed.)
Use tongs to pull out the bay leaves, and chicken thighs. Place the chicken on a cutting board. Then stir the egg noodles into the soup and simmer another 6-9 minutes, until the pasta is cooked.
Meanwhile, remove the chicken skins and bones. Shred the chicken with a fork. Then stir the chicken back into the soup.
When the noodles are almost cooked, measure the cornstarch and lemon juice into a small bowl. Whisk well. Then stir the mixture into the soup to thicken the base a little. Finally, stir in the chopped parsley. Taste, then salt and pepper as needed.
