Finely chop the onion and mince the garlic. Dice the carrots and chicken.
Heat 3 Tablespoons of oil in a large pot (feel free to use more or less oil depending on your preference).
Add the chicken and fry over medium or medium-low heat until cooked through (if your chicken is already cooked, you can add it in after the veggies are tender).
Add all of the chopped veggies to the same pot and continue frying and stirring occasionally until the veggies are somewhat tender.
Add in the chicken broth and heat to boiling. Continue boiling for around 8-10 minutes, or until the carrots are soft.
Add in the egg noodles and continue boiling according to the length of time listed on the egg noodle package.
Add salt, pepper, and other seasonings to taste. Add more chicken broth, if necessary, at this point. It depends on your personal broth/noodle ratio preference.