Shred the rotisserie chicken into bite-sized pieces.
In a large pot, heat some oil over medium heat.
Add chopped onion, carrots, and celery; sauté until softened.
Stir in minced garlic and cook for an additional minute.
Pour in the chicken broth and bring to a boil.
Add the shredded chicken, thyme, and rosemary; reduce heat to a simmer.
Season with salt and pepper to taste.
Let the soup simmer for about 20 minutes.
Adjust seasoning as needed before serving.
Garnish with fresh parsley and serve hot.