Preheat oven to 400 degrees F. Cut the potatoes in quarters and place in a bowl with the olive oil, salt, and rosemary. Toss the potatoes until well coated
Place the potatoes on a baking sheet and spread out into 1 layer. Roast in the oven for about 1 hour, flipping at least twice during cooking to ensure even browning, until the potatoes are browned and crispy.
Season with the Serious Foodie West African Paradise rub and extra salt (if desired) immediately. Add a drizzle of extra virgin olive oil, if you like.