Preheat oven to 300 degrees. Beat egg white until soft and foamy. Combine all remaining ingredients except pecans; whisk into egg white. Stir in pecans until well coated; spread mixture in single layer onto an ungreased baking pan.
Bake pecans for 15 minutes, then remove from oven. Using a metal spatula, toss, stir, and separate nuts. Reduce oven to 250 degrees and return nuts to bake until medium brown, about 10 minutes. Remove from oven; toss, and stir again. Place baking pan on wire rack to cool (they will crisp as they cool). Break up any that stick together.