Lightly brush the potatoes with extra-virgin olive oil, wrap in foil, and place on a baking sheet. Bake for 1 hour or until tender when pierced with a fork.
While the potatoes are baking, combine in a small bowl the remaining oil, chipotle seasoning, salt, and pepper.
When the potatoes are cooked, slice them into quarters then scoop out 1/2 of the pulp from each quarter. Discard pulp or use in another recipe.
On the inside with the remaining pulp, add the oil-chipotle mixture then bake them again for another 15 minutes.
While cooking, in a small bowl combine the tomatoes, onion, and balsamic vinegar.
Add a dollop of yogurt or sour cream on top of each potato skin then the tomato mixture. Serve while hot.