Wash the potatoes thoroughly. Cook in boiling water for about 15 minutes. Meanwhile cut pumpkin into slices. Core and peel the slices. Pluck rosemary twigs smaller. Halve bacon slices.
Wrap the potatoes with bacon, while fixing some rosemary around each one. Spread the potatoes and pumpkin slices on a baking tray, drizzle with oil. Sprinkle with salt, crushed chilli and small remains of rosemary needles.
Cook in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 20-25 minutes. Turn once in between. In the meantime, peel and finely dice the onion for the dip. Cut the avocado in half, stone it, spoon the flesh out of the skin, sprinkle with lemon juice and finely crush.
Mix with onion cubes and yoghurt. Season to taste with salt and crushed chilli. Serve vegetables and dip garnished with lettuce leaves, chillies and rosemary.