01 - Combine grated Parmesan cheese, breadcrumbs, garlic powder, salt, and black pepper in a shallow dish.
02 - Beat eggs in a separate shallow bowl until smooth.
03 - Dip each chicken breast first into the egg wash, then press firmly into the Parmesan breadcrumb mixture to evenly coat.
04 - Arrange the coated chicken breasts on a greased baking sheet. Bake in a preheated oven at 400°F for 25-30 minutes, or until golden and internal temperature reaches 165°F.
05 - Place peeled and quartered potatoes in a large pot and cover with cold water. Add 1/2 teaspoon salt. Bring to a boil and cook until tender, about 20 minutes.
06 - While potatoes cook, melt butter in a small saucepan over medium heat. Add minced garlic and sauté until fragrant, about 1 minute.
07 - Drain cooked potatoes and return to the pot. Add warm garlic butter, milk, 1/4 teaspoon pepper, and mash until creamy and smooth.
08 - Plate crispy Parmesan chicken alongside garlic mashed potatoes. Sprinkle with chopped parsley to garnish.