Heat the oil over medium-high heat in a large stockpot.
Cut the chicken breast into a few large pieces, and cook the chicken in the stockpot until the chicken develops a nice golden-brown seared crust on it.
Add the onions, celery, garlic and carrots to the pot and cook for about 3 minutes, until the veggies begin to soften.
Add the broth, oregano, and basil to the pot. Put the lid on and turn the heat up to high. Bring the broth to a boil.
When the broth boils, turn the heat down to medium-low, leave the lid on, and allow the soup to simmer for about 20 minutes until the vegetables are soft.
Add the noodles 10 minutes before the end of cooking.
The soup is ready to eat when the noodles and veggies are soft, and when the chicken pieces register an internal temperature of 165 °F
Transfer the chicken to a plate and let it cool for a couple of minutes before shredding the meat up with a fork. Return the shredded chicken to the pot.