Have ready a large baking sheet. In a small bowl combine sugar, salt and black and red peppers.
Heat a large skillet over medium-high heat; add pecans; cook and stir until hot, about 1 minute. Reduce heat to medium; sprinkle pecans with half of the sugar and pepper mixture; cook and stir until sugar melts, about 30 seconds.
Add remaining sugar and pepper mixture; cook and stir until sugar melts and coats nuts, about 40 seconds. Place nuts on baking sheet; cool slightly and separate.