Wash sweet potatoes thoroughly, prick all around with a fork. Bake on a baking tray lined with baking paper in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for approx. 45 minutes.
In the meantime, mix the sour cream and feta well together. Cut the chorizo into strips and fry until crispy in a pan without fat. Drain the pepperoni well and cut into rings.
Cut the potatoes lengthwise, open and arrange them. Spread some feta cream on each. Sprinkle with chorizo, pepperoni and pepper. Add the rest of the cream. Serve with a spinach salad.