01 - Place the chicken breasts in an even layer at the bottom of the crockpot.
02 - In a medium bowl, whisk together the softened cream cheese cubes, grated Parmesan cheese, heavy cream, minced garlic, Italian seasoning, salt, black pepper, red pepper flakes, cream of chicken soup, and chicken broth until completely smooth and well combined.
03 - Pour the prepared sauce mixture evenly over the chicken breasts in the crockpot.
04 - Cover and cook on high setting for 4 hours or on low setting for 6 hours, until the chicken is tender, cooked through, and reaches an internal temperature of 165°F.
05 - About 20 minutes before the chicken finishes cooking, bring a large pot of salted water to boil. Add the pasta and cook according to package directions until al dente. Drain thoroughly in a colander.
06 - Carefully remove the cooked chicken breasts from the crockpot and shred using two forks. Return the shredded chicken to the sauce and stir thoroughly to combine.
07 - Add the drained cooked pasta to the crockpot, stirring gently until all pasta is evenly coated with the creamy garlic Parmesan sauce.
08 - Serve immediately while hot, sprinkled generously with freshly chopped parsley as a garnish.