Season the chicken thighs with 1 tsp. Italian seasoning and salt and pepper on both sides.
In a large skillet, melt the butter over medium high heat.
Get the skillet hot, and then place the chicken in, in batches, cooking 3-4 minutes each, to sear each side. Place the seared chicken to the side.
In your crockpot, add the red potatoes, olive oil, garlic, and salt and pepper. Stir, and smooth the potatoes into an even layer.
Place the seared chicken thighs over top of the potatoes.
Cook on high 3-4 hours or low 6-8, until chicken is done to 175-195 degrees Fahrenheit.
Before serving, top with the freshly grated parmesan cheese and fresh chopped parsley.