In a large pot over medium heat, cook onion for 5 minutes. If not using frozen, add 1 tablespoon of oil to cook it in. Add in the carrots and celery and cook for another 5 minutes.
Add in the chicken and cook 5 minutes, stirring regularly. Add salt and garlic powder and stir again.
Add broth and water and bring to a boil. Reduce to simmer, cover and let cook 15-20 min until veggies are tender.
Remove cover and add in noddles and cook according to packing- mine took 15 min. Stirring often to make sure the noodles don’t stick together.
Serve with gluten free crackers if desired. Store leftovers covered in the fridge for up to 10 days.