Heat the oil in a wok or a wide-bottomed non-stick frying pan, fry the chicken for approx. 4 mins., remove, season with salt. Fry the pineapple in the same pan for approx. 5 mins., add to the chicken.
Rinse the rice in a sieve under cold running water until it is clear. Drain well. Heat the oil in the same pan, add the rice. Add the pak choi, chicken stock, maple syrup and sambal oelek, bring to the boil, cover and simmer on a low heat for approx. 10 mins. Return the chicken and pineapple to the pan, heat gently, season with salt. Sprinkle the cashew nuts over the top.