01 - Place chicken breasts or thighs into the crockpot as the base layer.
02 - Layer carrots, celery, onion, and garlic over the chicken.
03 - Pour in the chicken broth, fresh lemon juice, and add the lemon zest.
04 - Stir in dried thyme, oregano, bay leaf, sea salt, and black pepper.
05 - If using rice or orzo, add it to the mixture now.
06 - Cover and cook on low for 6-7 hours or on high for 3-4 hours, until chicken is fully cooked and vegetables are tender.
07 - Remove the chicken from the crockpot, shred using two forks, then return it to the soup.
08 - Taste the soup and add more salt or pepper if needed.
09 - Serve hot, garnished with freshly chopped parsley.