01 - Preheat oven to 400°F. Line a large baking sheet with parchment paper or lightly grease with cooking spray.
02 - Place quartered potatoes in a large bowl. Drizzle with 1 tbsp olive oil and season with 1/2 tsp salt and 1/2 tsp black pepper. Toss until evenly coated.
03 - Arrange seasoned potatoes in a single layer on the prepared baking sheet, ensuring even spacing for proper roasting.
04 - Using the same bowl, coat chicken breasts with 1 tbsp olive oil, 1 tsp salt, and 1/2 tsp black pepper. Rub seasoning evenly into the meat.
05 - Place seasoned chicken breasts directly on top of the potato bed, leaving space between pieces for heat circulation.
06 - Combine minced garlic, grated Parmesan, Italian herbs, smoked paprika, and chopped parsley in a small bowl. Mix thoroughly to create uniform coating mixture.
07 - Sprinkle garlic Parmesan mixture evenly over both chicken breasts and potatoes, covering surfaces completely.
08 - Bake for 40-45 minutes until chicken reaches internal temperature of 165°F and potatoes are golden brown and fork-tender.
09 - For extra crispy topping, switch oven to broil for 2-3 minutes, watching closely to prevent burning.
10 - Remove from oven. Sprinkle with additional grated Parmesan and fresh parsley. Serve immediately while hot.