Start by seasoning the chicken breasts with salt, black pepper, garlic powder, and onion powder. Rub the seasoning evenly over the chicken.
Heat the olive oil in a skillet over medium heat. Once hot, sear the chicken breasts for about 2-3 minutes on each side until golden brown. This step adds extra flavor but is optional if you're short on time.
In a mixing bowl, combine the chicken broth, heavy cream, minced garlic, Parmesan cheese, and dried thyme. Stir until well mixed.
Place the seared chicken breasts into the crockpot. Pour the creamy mixture over the chicken, making sure they are fully covered.
Cover the crockpot and cook on low for 6 hours or until the chicken is tender and cooked through.
Once done, gently shred the chicken with two forks and stir it back into the sauce.
Serve hot, garnished with fresh parsley.