1. Preheat oven to 425°. Bake potatoes in a single layer on a lightly greased baking sheet 12 minutes; turn potatoes, and bake 5 to 7 more minutes or until crisp and lightly browned. Remove from pan; cool on a wire rack 10 minutes.
2. Meanwhile, whisk together pepper jelly and lime juice in a small bowl; stir in grapes and next 3 ingredients.
3. Arrange potatoes on a serving platter; sprinkle with goat cheese. Top with grape mixture, using a slotted spoon. Serve immediately.