Heat the olive oil in a large soup pot over medium heat.
Add the carrots, parsnips, celery, leek, and onion. Cook for 4 to 5 minutes, stirring frequently until slightly softened.
Add the garlic, kosher salt, and black pepper. Stir and cook for 1 minute until fragrant.
Add the thyme, tarragon, bay leaf, chicken breasts, and chicken broth.
Bring the mixture to a gentle boil.
Reduce the heat to low, cover, and simmer for 15 minutes or until the chicken is fully cooked.
Remove the chicken breasts from the pot and place them on a cutting board.
Shred the chicken using two forks.
Return the shredded chicken to the pot and simmer for an additional 1 to 2 minutes.
Remove the thyme sprigs, tarragon sprigs, and bay leaf.
Stir in the chopped parsley.
Serve the Chicken Soup Recipe hot, garnished with extra parsley and freshly ground black pepper.