For the jerk chicken, place the vegetable oil into a deep, heavy- bottomed saucepan and heat until a small cube of bread sizzles and turns golden when dropped into it. (CAUTION: hot oil can be dangerous. Do not leave unattended.)
Place the chicken legs into a large bowl and dredge in the jerk seasoning to coat all over. Carefully place into the hot oil and deep fry, turning occasionally, for about 12 minutes, or until golden-brown and completely cooked through. Remove from the oil with a slotted spoon and drain on kitchen paper.
Meanwhile, for the rice and peas, heat the oil in a large lidded pan and fry the onion until softened but not coloured.
Add the rice and stir well, then add the water and bring to the boil.
Add the coconut milk, kidney beans and thyme, reduce the heat and simmer, covered, for about 20 minutes, or until the rice is cooked. Season, to taste, with salt and freshly ground black pepper.
To serve, place a good spoonful of the rice into a cup, then turn out onto a serving plate. Repeat with each serving and place 2-3 chicken legs on top of each pile of rice. Sprinkle with fresh coriander.