Pat chicken cutlets completely dry with paper towels. Season both sides with 1/2 tsp kosher salt, black pepper, and garlic powder. Dredge cutlets lightly in flour, shaking off excess for a golden, delicate sear.
Heat olive oil and 1 tablespoon butter in a heavy 12-inch skillet over medium-high heat. Once hot and shimmering, add cutlets in a single layer and sear undisturbed for 3 to 4 minutes per side until deeply golden brown and cooked through to 165°F (74°C). Transfer cutlets to a warm plate and tent loosely with foil.
Reduce heat to medium. Add 1 tablespoon butter to the skillet drippings along with minced garlic. Sauté for 45 to 60 seconds until fragrant and golden, taking care not to burn.
Pour in the rich chicken bone broth, using a wooden spoon to scrape up all the savory browned caramelized bits (fond) clinging to the bottom of the pan. Simmer for 2 minutes until reduced by half.
Lower heat to medium-low. Slowly pour in the heavy cream and fresh lemon juice, whisking constantly to combine smoothly. Simmer gently for 2 minutes until the sauce turns velvety and coats the back of a spoon. Whisk in the final tablespoon of cold butter for a glossy restaurant sheen.
Return the golden chicken cutlets and any accumulated resting juices back into the skillet. Nestle lemon wheels around the chicken and spoon the bubbling sauce over each piece. Garnish generously with fresh parsley and serve immediately.