01 -
Season chicken breasts evenly with kosher salt and freshly ground black pepper; place in the slow cooker base.
02 -
Pour entire bottle of Parmesan garlic sauce over the chicken. Add milk to the empty sauce bottle, shake to combine, and pour the milk mixture over the chicken.
03 -
Distribute cubed cream cheese and grated Parmesan cheese into the slow cooker; stir gently to ensure the chicken is coated with sauce and cheese.
04 -
Cover and cook on high for 2 to 3 hours or on low for 3 to 4 hours until chicken is fully cooked and tender.
05 -
Remove chicken and shred using two forks or dice into bite-sized pieces; return to the slow cooker and stir to incorporate with sauce.
06 -
Cook pasta according to package directions until al dente. Drain thoroughly, then add pasta to the slow cooker and stir until evenly combined with chicken and sauce.