Combine all soup ingredients except lemon zest, juice and orzo in a slow cooker. Cook on medium for 6-8 hours or high for 3-4 hours.
Remove chicken breasts and allow them to cool, once cooled, shred.
While chicken is cooling, add pasta to soup and increase heat level to high (if cooking soup on low). Cook for 20-25 minutes more or until pasta is tender.
Add lemon zest, lemon juice, and shredded chicken. Stir to combine. Taste and add salt if needed.
Serve it with some crusty bread and enjoy!Notes
QUICK VERSION
Add your veggies and butter to the Dutch oven and sauté until veggies are soft. Add the shredded rotisserie chicken and the rest of the soup ingredients except lemon zest, juice and orzo into a large pot or Dutch oven and let simmer for 30 minutes. Add pasta, lemon zest, and lemon juice. Stir to combine. Taste and add salt if needed. Serve it with some crusty bread and enjoy!