Preheat the oven to 220 degrees C. Line a baking tray with baking paper. Arrange pumpkin in a single layer on prepared tray. Drizzle with oil and scatter with chilli and 1/2 tsp paprika. Roast for 1 hour or until tender and caramelised. Cool.Combine honey, garlic, oil and remaining 2 tsp paprika in a bowl. Add the prawns and toss to coat. Set aside for 15 minutes to marinate. When ready to serve, arrange sourdough on a serving platter. Scoop pumpkin flesh from skin and spread over sourdough, then dollop with sour cream. heat a large non-stick frypan over medium heat. Season prawns and add to pan. Cook until caramelised. Top bruschetta with prawns, drizzle with salsa verde.