In a large pot, bring chicken broth to a boil.
Add chicken breasts and cook until fully done, about 20 minutes.
Remove the chicken and let it cool.
Add orzo pasta to the broth and cook for 8-10 minutes until tender.
While pasta cooks, shred the cooled chicken into bite-sized pieces.
In a bowl, whisk together eggs and lemon juice until frothy.
Temper the egg mixture by slowly adding a ladle of hot broth, whisking constantly.
Gradually stir the tempered egg mixture back into the pot.
Return shredded chicken to the pot and heat through.
Season with salt and pepper to taste.