Heat olive oil in a large pot over medium-high heat. Add diced onion, sliced carrots, and chopped celery, cooking for 3 minutes until vegetables begin softening and releasing their aromas into the pot.
Stir in minced garlic, dried thyme, and dried oregano, cooking for 1 minute to bloom the spices. This step builds a flavorful foundation for your easy chicken soup base.
Add chicken broth, bay leaves, and chicken pieces, bringing everything to a boil over high heat. Reduce heat to medium and simmer for 12 minutes until the lemon chicken soup reaches full tenderness throughout the chicken.
Stir in egg noodles and cook for 4 minutes until they're tender but still have a slight bite. Taste and adjust salt and pepper to your preference, remembering that it should taste slightly salty since flavors will mellow as it cools.
Remove from heat and stir in fresh lemon juice and lemon zest, tasting after each addition to reach your ideal brightness level. The citrus transforms the dish immediately, creating that signature cozy brightness families crave.
Ladle into bowls and top with fresh chopped parsley for color and herbaceous freshness. Serve immediately while steaming hot for maximum comfort and flavor impact.