Preheat oven to 450ºF.

Wash and dry potatoes completely.

Once dried, slice potatoes in half (and then in half again if potatoes are larger in size) and add them to a large bowl.

Add chili powder, garlic salt, oregano, cayenne (if using) and olive oil to the potatoes. Mix to cover potatoes completely.

Place seasoned potatoes on a large baking sheet and spread evenly in a single layer.

Roast potatoes for 15 minutes.

Using tongs or a spoon, toss potatoes to loosen from the sheet pan.

Roast for an additional 5-10 minutes, or until browned on the outside, and tender on the inside.

Remove from oven and add finely chopped cilantro.

Toss again and serve immediately or once slightly cooled.