Preheat your oven to 400 degrees Fahrenheit.
Combine ¼ cup olive oil, garlic powder, paprika, onion powder, and black pepper in a bowl. Stir until incorporated.
Spatchcock the chicken by removing the backbone and any excess fat, cracking the breast bone, and flipping the chicken so it lays flat.
Season all sides of the chicken with olive oil mixture, making sure the seasoning gets under the skin.
Place chicken in a cast-iron skillet or sheet pan, laying the chicken on it’s back, breast side up. Bake in preheated oven for 40-45 minutes.
When your chicken has about 10 minutes left, Add 2 Tbsp oil and breadcrumbs to a small bowl. Remove chicken from oven and cover with breadcrumb mixture. Return to the oven and cook for the remaining 10 minutes or until chicken is done.
Meanwhile, prepare your Garlic Parmesan sauce. Place heavy cream and garlic is a medium saucepan over medium heat. When the mixture starts to bubble, remove from heat and stir in parmesan cheese. Pour the sauce over chicken before serving.