01 - Place the chicken breasts in the bottom of the crockpot.
02 - In a medium bowl, whisk together the cream cheese, Parmesan cheese, heavy cream, garlic, Italian seasoning, salt, black pepper, red pepper flakes, cream of chicken soup, and chicken broth until smooth.
03 - Pour the sauce mixture over the chicken. Cover and cook on high for 4 hours or on low for 6 hours, until the chicken is tender and fully cooked.
04 - About 20 minutes before serving, cook the pasta according to package instructions until al dente. Drain well.
05 - Remove chicken breasts from the crockpot and shred with two forks. Return shredded chicken to the sauce and stir to combine.
06 - Add the cooked pasta to the crockpot, stirring gently to coat in the sauce. Serve hot, garnished with fresh parsley.