Preheat oven to 425 degrees.
Line a broiler pan with foil.
In a small bowl, combine the oil with the garlic and 2 Tbl of the fresh rosemary (or 1 tsp of the dried.) In another small bowl, combine the breadcrumbs, Parmesan, pepper and remaining 2 Tbl fresh rosemary (or 1 1/2 tsp dried.) Place the chicken skin-side up on the broiler pan.
Sprinkle the breadcrumb-parmesan mixture over the chicken.
Drizzle the rosemary-garlic oil over the chicken and potatoes and bake for 20 minutes.
Reduce the oven temperature to 375 and continue baking for 30 to 40 minutes, or until the potatoes are tender and the chicken is golden and cooked through.
Microwave tip: Prepare and arrange the ingredients as instructed in steps 2 through 6 in a shallow microwave safe baking dish.
Cover loosely with wax paper and cook at 100% for 15 minutes.
Transfer the chicken and potatoes to a foil lined broiler pan and broil until crisp and cooked through, 8 to 10 minutes.