Preheat Oven: Preheat the oven to 300℉ and line a baking tray with parchment paper.
Roast Nuts: Add nuts to a bowl, add olive oil and mix to coat the nuts in the oil. Add the nuts to the parchment paper-lined baking tray, spread in an even layer, and roast in the oven on the middle rack for 20 minutes.
Prep Topping: Meanwhile, in a small bowl, add the vinegar powder and the salt and mix. Set aside.
Coat Nuts: After 20 minutes of roasting, remove the nuts from the oven and immediately sprinkle on the vinegar and salt powder mixture. Gently turn the nuts on the tray with a spatula (or use the parchment paper to mix/shake), but don't mix too much as the mixture may start to clump.
Let Cool: Once coated, let rest and cool for another 10 minutes.
Serve and Enjoy or store in an airtight container to enjoy for 2-3 weeks.