Put the chick peas in a saucepan with the vinegar and a dash of salt. Bring the chickpeas to a boil, and remove from heat. Leave them covered and let the chick peas soak for 30 minutes.
Preheat the oven to 400F.
Cover a baking sheet with parchment paper. Drain the chickpeas and place on baking sheet. Massage the chick peas with a bit of olive oil, sprinkle with sea salt and put it in the oven. Bake for 20 minutes then shake around and put them back in the oven for another 10 minutes. Watch them carefully so they don't burn. If they are still soft after the final 10 minutes bake for another 10 minutes.
Recipe by the vegan ginger at https://www.theveganginger.com/roasted-salt-vinegar-chickpeas/