1. Heat oven to 400° F. Rub the potatoes with the olive oil. Place on a rimmed baking sheet and bake, turning occasionally, until tender and easily pierced with a paring knife, 65 to 75 minutes.
2. In a small bowl, combine the artichokes and their oil, olives, and lemon zest. Split the potatoes and, dividing evenly, top with the artichoke mixture.
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