Baked Chicken Breast Recipe

Name: Baked Chicken Breast Recipe
Ingredients: 24 ounces skinless boneless chicken breasts (4 medium); 18 ounces russet potatoes (peeled, cut into 1/2-inch chunks); 16 ounces fresh asparagus; 1.5 ounces grated Parmesan cheese; 1/2 teaspoon salt; 2 teaspoons paprika; 1 teaspoon garlic powder; 1 teaspoon ground black pepper; 1 teaspoon dried oregano; 2 1/2 tablespoons unsalted butter (melted, divided); 2 tablespoons olive oil; 1.5 ounces lemon (4 slices); 2 tablespoons chopped parsley (optional)