Over medium heat add oil, onion and celery. Cook for about 5 minutes. Add in garlic and cook another 1 minute.
Toss in bay leaves and chicken stock. Turn heat up to a boil.
Once boiling add chicken breasts and turn heat to a simmer. Add in parmesan rind if using and tumeric.
Cook for about 15 minutes and remove chicken to a plate. Stir in orzo, salt and pepper. Orzo will take about 8-10 minutes to cook.
Shred chicken using two forks and return to soup pot. Once orzo is al dente (about 7-8 minutes) soup is ready.
Add lemon juice. Remove bay leaves and parmesan rind. Ladle into bowls and serve with fresh herbs and black pepper.