Preheat the oven to 375°F (190°C). Grease a 9x13-inch baking dish.
In a large bowl, mix sliced potatoes with heavy cream, cheddar, mozzarella, garlic, salt, and pepper. Spread evenly in the baking dish, cover with foil, and bake for 30-35 minutes.
Season the chicken chops with salt, pepper, and dried herbs. Heat olive oil in a skillet and sear the chicken until golden, 4-5 minutes per side. Set aside.
In the same skillet, melt butter and sauté garlic until fragrant. Add parsley and stir well.
Remove the foil from the potatoes, sprinkle extra cheese on top, and place the seared chicken over the potatoes. Drizzle with garlic butter sauce.
Bake uncovered for 10-15 minutes, until the cheese is bubbly. Let rest, garnish with parsley, and serve.