Layer the base: Add chicken, broth, water, veggies, and seasonings to your slow cooker. Cover and cook on LOW 5–6 hours or HIGH 3–4 hours.
Shred the chicken: Remove the chicken, shred with two forks, and return it to the pot.
Creamy magic: Add cream cheese, Boursin, and parmesan. Stir on HIGH for 10–15 minutes until smooth and melted.
Add tortellini: Stir in tortellini and cook another 20–30 minutes until tender.
Spinach + serve: Fold in spinach until wilted. Adjust salt, pepper, and thickness. Serve hot with a swirl of cream and extra parmesan snow on top.