Start by seasoning the chicken breasts with salt, pepper, and Italian seasoning on both sides.
Heat the olive oil in a skillet over medium heat. Once hot, sear the chicken breasts for about 3-4 minutes on each side until golden brown. This step adds flavor but can be skipped if you're short on time.
Transfer the seared chicken to the crockpot.
In a small bowl, combine chicken broth, heavy cream, minced garlic, and grated Parmesan cheese. Mix well until the cheese is somewhat dissolved.
Pour the garlic Parmesan mixture over the chicken in the crockpot, ensuring each piece is well-coated.
Cover the crockpot and set it to low for 4-6 hours or high for 2-3 hours, depending on your schedule.
Once cooked, check for doneness: the chicken should reach an internal temperature of 165°F (75°C).
To serve, remove the chicken from the crockpot and let it rest for a few minutes before slicing. You can drizzle some of the sauce over the top for added flavor.
Garnish with fresh chopped parsley before serving.
Notes
Searing the chicken is optional but adds more flavor.