Pat chicken (1 pound) dry with paper towels and season generously with salt and pepper.
In a large pot, heat oil (2 tablespoons) over medium-high heat. Add chicken in batches, skin side down; cook until dark golden brown, 3-4 minutes. Remove the browned chicken to a plate removing and discarding the skin. Drain all but 2 tablespoons of drippings from the pot.
Saute the onions (1 1/2 cups) in the drippings over medium heat until soft and tender, about 7 minutes. Add the garlic (3 cloves) to the onions and cook until fragrant, about 1 minute.
Add the water (10 cups), stirring to lift up any brown bits from the bottom of the pot, and bring to a boil. Add the celery (1 cup), carrots (1 cup), bay leaves (2), thyme (1 tablespoon), 1 1/2 teaspoon salt, 3/4 teaspoon pepper, 1 heaping tablespoon Better Than Bouillon (chicken flavor), and the browned chicken. Reduce the heat to a simmer, cover, and simmer until the chicken is tender about 25-30 minutes.
Transfer the chicken to a plate. Remove the soup from the heat and add the noodles (8 ounces). Let stand, covered until the noodles are tender 20-22 minutes.
When the chicken is cool enough to handle, cut it into 1/2-inch chunks. Return to chicken to the pot and stir in the parsley. Remove bay leaves and adjust seasoning. Serve