Combine the flour and seasonings in a shallow dish. Pour the buttermilk into another shallow dish. Combine the pecans and cereal in a third shallow dish. Spread the butter in a 15 x 10 inch jelly-roll pan.
Dip the chicken pieces first into the flour mixture, then into the buttermilk. Let drain slightly, then dip into the pecan mixture, turning to coat well. Arrange the chicken in the jelly-roll pan.
Bake, uncovered, at 400°F for about 50 minutes, until the chicken is golden, crisp and tender, turning once after 25 minutes. Drain on paper towels.