1. Preheat oven to 210°C. Line 2 large oven trays with baking paper.
2. Mix turmeric, sweet paprika and 1 tsp sea salt flakes in a bowl.
3. Slice potatoes into 5mm thick rounds. Using a small sharp knife, cut eye and mouth shapes from the centres of the rounds.
4. Brush potato slices with oil, sprinkle with spice mix and arrange onto a tray in a single layer.
5. Bake for 15 minutes, turn and bake for another 15 minutes or until golden.
6. Serve sprinkled with rosemary sprigs.