In a bowl, add 5 tablespoons Piri Piri spice, ¼ cup red wine vinegar, ¼ cup olive oil, 1 tablespoon coarse kosher salt, 6 minced garlic cloves, and ½ teaspoon fresh ground pepper. Mix well. Brush Piri Piri rub over entire chicken and under skin over the breast and inside the cavity of the chicken.
Marinate in refrigerator for 2 to 3 hours.
Place oven rack in the middle of the over and preheat to 425℉.
In a large bowl, add 2 pounds red potatoes, 1 tablespoon of Piri Piri mixture, and 1 tablespoon of olive oil. Toss to evenly coat potatoes and layer in the bottom of a greased roasting pan.
Truss the chicken with the Turbo Trusser (see video below) and place in oven.
Roast chicken for 15 minutes and then turn oven down to 350℉ degrees.
While the chicken is roasting prepare the green sauce.