Preheat oven to 250°F and place oven rack in center position. Spray a baking sheet liberally with cooking spray. Set aside.

In a largge bowl, whisk egg whites until frothy. Add nuts and stir until coated. In a small bowl, combine sugar, curry powder, cayenne pepper and cinnamon. Sprinkle sugar mixture over nuts and toss until coated. Arrange nuts in a single layer on prepared baking sheet. Bake for 45 minutes until golden and fragrant. Allow to cool for 1 hour.

Using a metal spatula, remove nuts from baking sheet and break into bite-sized pieces.