1. In a soup pot, bring the broth, lemon peel, bay leaf and saffron to a boil.
2. Stir in the orzo and boil for 5 minutes.
3. Cover, remove the pan from the heat and let the orzo steep for 5 minutes.
4. Discard the lemon peel and a bay leaf.
5. In a bowl, whish the eggs and egg yolks, lemon juice and hot sauce.
6. Whisk in 1/2 cup soup to temper the eggs, then whish the egg mixture into the soup.
7. Cook on low heat, whisking, for 5 minutes.
8. Stir in the parsley; season with salt and pepper. Serve with pita chips.