In a large pot, heat the olive oil over medium heat. Add the diced onion, carrots, and celery. Sauté for about 5-7 minutes until the vegetables are softened.
Stir in the minced garlic and cook for an additional 1-2 minutes until fragrant.
Pour in the chicken broth and add the dried thyme, dried parsley, and bay leaf. Bring the mixture to a boil.
Add the chicken breasts to the pot. Reduce the heat to a simmer and cover. Cook for 20-25 minutes until the chicken is cooked through.
Remove the chicken from the pot and shred it using two forks. Return the shredded chicken to the pot.
Add the egg noodles and cook according to package instructions, usually about 6-8 minutes, until tender.
Season with salt and pepper to taste. Remove the bay leaf before serving.
Ladle the soup into bowls and garnish with fresh parsley.