In a saucepan, combine onion, honey, garlic, 2 tablespoons of oil, catsup
and tomato paste.
Add Worcestershire sauce, chili sauce and Five Spice Powder and simmer,
uncovered, 5 minutes, stirring occasionally. In a blender or food processor,
process mixture to a smooth paste. Add remaining oil and stir well.
Arrange chicken in a roasting pan. Brush with marinade and let stand 1
hour. Meanwhile, preheat oven to 400 F (205 C). Bake chicken in preheated
oven 35-40 minutes, turning and brushing frequently with marinade juices.
Serve hot or cold, garnished with watercress sprigs and lemon slices, if
desired.