Heat the olive oil in a large Dutch oven over medium heat. Add the diced onions and minced garlic, sautéing until softened and fragrant, about 3 to 4 minutes.
Stir in the shredded rotisserie chicken, allowing it to warm through for 1 to 2 minutes.
Pour in the chicken broth, then add the baby carrots, chopped celery, dried thyme, kosher salt, and bay leaves. Stir to combine.
Cover the pot and bring the soup to a gentle simmer. Cook until the carrots and celery are tender, about 15 to 20 minutes.
Add the egg noodles to the pot and continue simmering, uncovered, until the noodles are cooked to al dente, about 6 to 8 minutes.
Remove the bay leaves, taste, and adjust seasoning if needed. Serve hot, garnished with fresh parsley.
Enjoy!