Prepare pan for baking: Use a flat baking sheet pan. Lay parchment or a non stick pad down. Spray with pan spray.
Whisk the egg whites until frothy. Add in the spices and sugar. Then fold in the nuts to coat evenly.
Spread the coated buts out evenly on the sheet pan. Try to keep them all separated so the cook evenly. Bake at 300 degrees until the crust becomes a golden brown, about 10 to 15 minutes. Allow to cool on a rack for at leat an hour. Do not cover until completely cooled or the crust will become soft and unappealing.
Notes
We use pecans here. But, you can use any nut you like. Or, do a mix of nuts.