Add chicken, broth, Cajun seasoning, smoked paprika, garlic powder, onion powder, black pepper, and salt to the crockpot. Light stir.
Cook on LOW 5–6 hours or HIGH 3–4 hours, until chicken is tender.
Shred chicken directly in the crockpot and stir to combine with the cooking liquid.
Switch crockpot to WARM. Add cream cheese and stir until fully melted.
Add milk gradually, stirring until the sauce loosens slightly. You may not need the full ½ cup.
Stir in mozzarella and parmesan until smooth and cohesive.
Stir in Greek yogurt last, until creamy.
Fold in cooked pasta until evenly coated.
Garnish with parsley if desired and portion for meal prep.
