Combine the sauces and pepper in a small saucepan and bring it to boil.
Preheat the oven with a baking tray (lined with foil) at 180 C degrees.
Let the sauce boil for 3 minutes till it thickens and caramelized. Pour it into a bowl.
On the chicken whole leg, turn it to the skin side up. Slit the chicken with a sharp knife, about 3 slits (refer to above picture) to speed up the roasting process and to allow the sauce to penetrate into the flesh of the chicken.
With a brush, brush the sauce onto the chicken and pop it in the oven, skin side down.
Let the chicken cook for 15 minutes, then take it out, and turn it over, skin side up. Coat with the sauce again and return into the oven for another 15 minutes
Take the chicken out again, and brush it one last time with the sauce. Pop it in the oven for another 5-10 minutes till the chicken is cooked through.