Place potato slices into a large bowl of cold water as you slice. Drain, and rinse, and pat completely dry.
While drying, combine all the ingredients for the spice mixture in a small bowl and mix until well combined.
Heat oil in a deep-fryer to 365 degrees F. Fry potato slices in small batches. Once they start turning golden, remove and drain on paper towels, dusting with the spice mixture. Continue until all of the slices are fried. Season with additional salt if desired.