Pour the chickpeas and vinegar in a medium saucepan, and add a pinch of salt. Bring to a boil, then remove from heat.
Preheat the oven to 400˚F. Line a baking sheet with aluminum foil.
Drain the chickpeas and place on the prepared baking sheet. Sprinkle with the coarse salt and olive oil and massage with fingers until fully coated.
Roast in the preheated oven for 25 minutes, or until golden.