Sautee Aromatics: Heat olive oil in a large pot over medium heat. Add finely chopped onions and cook until they turn translucent. Stir in minced garlic and cook for another minute until fragrant.
Simmer Chicken Broth: Pour in the chicken broth and bring it to a gentle simmer.
Add Chicken and Orzo: Add the cooked shredded chicken and orzo pasta to the simmering broth. Let it cook for 10-12 minutes until the orzo is tender and the chicken is heated.
Create Egg-Lemon Mixture: While the soup is simmering, whisk together eggs and lemon juice in a separate bowl until well combined.
Temper the Eggs: To temper the eggs, gradually add a ladleful of the hot soup broth to the egg-lemon mixture, whisking continuously to prevent curdling.
Finish the Soup: Once tempered, slowly pour the egg-lemon mixture back into the soup pot, stirring constantly. This will thicken the soup slightly. Season with salt and pepper to taste.
Serve: Ladle the soup into bowls and garnish with chopped parsley for a burst of freshness.