In a large mixing bowl, combine the minced garlic, grated Parmesan cheese, Italian seasoning, black pepper, and salt. Mix well to combine into a paste.
Drizzle olive oil into the bottom of the crockpot to coat the surface.
Place the halved baby potatoes in the bottom of the crockpot.
Rub the garlic-Parmesan mixture evenly over the chicken breasts, then place the chicken on top of the potatoes.
Pour the chicken broth around the edges of the crockpot, making sure not to wash off the garlic-Parmesan mixture.
Cover the crockpot and cook on low for 6-7 hours or on high for 3-4 hours, until the chicken is cooked through and the potatoes are tender.
Once cooked, check the seasoning and adjust salt and pepper as needed.
Serve hot, garnished with chopped fresh parsley on top.