My Famous Rosemary Garlic Chicken and Potatoes

1 whole chicken, split up the back and flattened a bit (or chicken pieces, with skin and bones)
4 baking potatoes, washed well and cut into 8-10 pieces each (you may use equivalant red potatoes if you want)
1/3 cup olive oil
2 -3 tablespoons chopped fresh rosemary
4 -6 garlic cloves, chopped
1/2 tablespoon kosher salt
1/2 tablespoon freshly cracked black pepper (I usually use a mortor and pestle)
1 teaspoon cayenne pepper (optional)

1 Preheat oven to 350 degrees.
2 Line a large baking pan with foil.
3 In a bowl mix together the olive oil, rosemary, garlic, salt and pepper.
4 Rub about 1/3 of this mixture all of the chicken and work some of it under the skin.
5 Mix the potatoes and the rest of the herb mixture together and scatter over the baking pan.
6 Lay the chicken on top of the potatoes.
7 Some will be under the chicken and some will not.
8 Place in the oven for about 1 hour or until the chicken is done.
9 Check the potatoes and move them around from time to time.
10 Cook until the juices from the chicken run clear and the potatoes are soft.
11 Remove chicken to cutting board to rest for at least 10 minutes.
12 Return potatoes to oven while chicken is resting.
13 You might even turn the oven up to 400 degrees for a few minutes if you want the skin of the chicken crisper.