Heat the olive oil and butter in a large stockpot over medium heat. Add onions, celery, carrots, salt, and pepper. Cook, stirring occasionally, until softened, about 7 -10 minutes.
1 Tablespoon olive oil, 1 Tablespoon unsalted butter, 1 medium yellow onion, 3 stalks celery, 2 large carrots, 1 teaspoon Kosher salt, ½ teaspoon freshly cracked black pepper
Add the garlic and cook until fragrant, about 1 minute.
3 garlic cloves
Add the chicken, thyme, rosemary, bay leaves, chicken broth, and water. Bring to a boil over medium-high heat.
1 ½ pounds boneless, 3 sprigs fresh thyme, 1 sprig Rosemary, 2 dried bay leaves, 6 cups low-sodium chicken broth
Reduce the heat to medium-low and simmer, covered, until the chicken is cooked through, for about 25 minutes.
Transfer the cooked chicken to a cutting board and discard the thyme, rosemary, and bay leaves.
Shred or dice the chicken into bite-size pieces.
Return the chicken to the soup along with the egg noodles. Continue to cook the soup over medium-low heat until the pasta is tender, about 10 minutes.
6 ounces wide egg noodles
Turn the heat off and stir in the chopped parsley and lemon juice. Serve immediately
¼ cup finely chopped fresh parsley, 2 Tablespoons fresh lemon juice