Preheat oven to 325°F. Place mixed nuts in a large bowl. Add egg white, then toss, coating nuts evenly. Add sugar, garam masala, cumin, cinnamon, allspice, clove, kosher salt and cayenne pepper, tossing to combine.

Spread nuts evenly on a rimmed baking sheet. Roast until nuts are nicely browned and very fragrant, stirring frequently to break up any clumps (about 12 to 15 minutes). Immediately transfer nuts to a clean bowl. Break up any clumps while nuts are still warm, then set aside.

Increase oven to 350°F. Line a rimmed baking sheet with foil and coat lightly with nonstick spray. Arrange bacon in a single layer on the baking sheet. Sprinkle a thin layer of brown sugar over the bacon. Using your hands, spread the brown sugar evenly over the slices. Flip the slices over and coat the other side in the same manner. Bake until crisp and dark golden (about 20 to 25 minutes).

Transfer bacon to a wire rack to cool. Once cooled and firm, chop bacon into small, bite-sized pieces and toss with nuts.