In a large dutch-oven, heat the butter over medium-high heat. Add the onion, carrots, celery, ½ teaspoon salt, ½ teaspoon pepper and cook for 10 minutes or so, until softened.
Add the garlic and cook for another 30 seconds.
Stir in the chicken stock, bay leaves, thyme and chicken thighs. Bring to a boil, then reduce to a simmer.
Partially cover the pot with a lid and cook, stirring a few times until the chicken thighs are cooked through; about 20 minutes.
Remove the cooked chicken onto a plate. Add the gluten-free egg noodles to the simmering soup. Cook for 8-10 minutes.
Meanwhile, dice the chicken into small pieces. Add the chicken back to the soup along with the fresh parsley. Season to taste with salt and pepper. Enjoy!