Stir in the chicken broth, chicken and seasonings and bring to a boil. Turn down the heat, cover and let the soup simmer for about 15 minutes.
Add in the orzo and cook for an additional 10 minutes, until the orzo is al dente and chicken is tender enough to shred.
Remove the chicken and cut it up or shred it, return it back into the soup along with the lemon juice, lemon zest and kale leaves. Give the soup a good stir, season with additional salt and pepper, as needed, and enjoy!