Heat 1 tablespoon olive oil in a large stockpot or Dutch oven over medium heat. Add onion, carrots and celery. Cook, stirring occasionally, until tender, about 3-4 minutes.
Stir in garlic, ginger, lemongrass, thyme and rosemary until fragrant, about 1-2 minutes.
Stir in chicken stock, bay leaves and 1 cup water. Add chicken and bring to boil; reduce heat and simmer, covered, until the chicken is cooked through, about 10-12 minutes. Remove chicken and shred, using two forks; set aside.
Stir in pasta and cook until tender, about 8-10 minutes.
Stir in chicken and lemon juice; season with salt and pepper, to taste.
Serve immediately, garnished with chives, if desired.
Notes
Use good-quality stock. The better quality your stock, the better your soup. Many brands love to pack in the salt so always opt for unsalted or a lower-sodium variety. Homemade stock is even better.
Use ginger and lemongrass. Ginger and lemongrass are a powerhouse for colds. Both have anti-inflammatory properties, soothing sore throats and alleviating cold symptoms.
Fresh herbs are best. Although you can certainly substitute dried herbs, fresh herbs are ideal here, delivering the best kind of flavor.
Repurpose leftover rotisserie chicken. Leftover rotisserie chicken is one of the best shortcut hacks to speed up prep time and maximize leftovers. Shred or dice the chicken into bite-sized pieces, adding the chicken to the soup at the very end of cooking just until warmed through. Pro tip: save the carcass of the rotisserie chicken for homemade chicken stock!
Add freshly squeezed lemon juice. Lemon juice will elevate your chicken noodle soup, adding a fresh, bright flavor and balancing out all the saltiness and richness of the soup.
Freeze without the pasta. Freeze the leftover soup without the ditalini pasta in individual freezer bags for portioning and easy thawing overnight, reheating gently on the stovetop until warmed through and stirring in freshly cooked pasta just before serving.