Prepare the chicken thighs by seasoning them with salt, pepper, and Italian seasoning.
Heat olive oil in a skillet over medium heat and sear the chicken thighs on both sides until golden brown.
Place the seared chicken thighs in the crockpot and add minced garlic on top.
Pour chicken broth and heavy cream over the chicken in the crockpot.
Sprinkle grated Parmesan cheese over the top and cover the crockpot.
Cook on low for 6–8 hours or high for 3–4 hours.
Once done, shred the chicken directly in the crockpot and mix it with the sauce.
Taste and adjust seasoning before serving.