In a large pot, heat a tablespoon of olive oil over medium heat. Add the chopped onion, carrots, and celery and cook until softened, about 5 minutes.
Add the chicken pieces to the pot and cook until browned on all sides.
Pour in the chicken broth and add the dried thyme, salt, and pepper. Bring the soup to a boil, then reduce the heat and simmer for 20 minutes, or until the chicken is cooked through and the vegetables are tender.
Serve hot and enjoy!
Notes
Optional: Add a squeeze of lemon juice or a sprinkle of fresh parsley before serving for extra flavor.