Heat the olive oil in a large frying pan over a medium heat and sweat the onion, chilli pepper and garlic for 6-7 minutes, stirring occasionally. Add the ground cumin, nutmeg and half of the paprika with a little seasoning and cook for a further minute. Add the sliced potato, mix once carefully, then reduce the heat and cover with a lid.
Cook for 4-5 minutes until the potato is just soft. Adjust the seasoning to taste, then spoon into a serving dish. Sprinkle the remaining paprika on top and garnish with a sprig of coriander leaves before serving.