Preheat oven or toaster oven to 400 degrees.

In a small pot, combine the potato slices and vinegar. Bring to a boil, then lower the heat and simmer until fork-tender, about 8 minutes. Let cool in the liquid for 30 minutes. Then drain well.

Dump the potato slices onto a sheet pan, spritz lightly with an olive oil mister, then sprinkle with salt and pepper, and toss to coat.

Arrange the potato slices in a single layer. Roast until lightly browned, about 25-30 minutes. Then flip the slices and broil until the underside is lightly browned, about 5 minutes more. Serve warm.