Pre-heat your oven to 200°C (390°F).
In a small jar or bowl, vigorously stir the olive oil, salt, one teaspoon ground cumin, chilli powder, and ground paprika to incorporate well.
Spread the pumpkin pieces out on an oven tray, making sure there’s space around each piece, use a silicone pastry brush to brush the spiced olive oil over the pieces of pumpkin, then roast the pumpkin for 25-30 minutes or so until soft, remove, and set aside to cool.
Drain the tin of chickpeas, keeping the brine, then transfer the chickpeas, garlic powder, extra virgin olive oil, tahini paste, teaspoon of ground cumin, lemon juice, salt, and pumpkin pieces to a food processor or blender, and pulse until well combined and smooth.
Taste and adjust the seasoning and spices to suit your palate, pulsing again to ensure they’re well combined. Transfer the pumpkin hummus to a bowl and refrigerate until ready to eat.
Just before serving, drizzle some extra virgin olive oil onto the pumpkin hummus and sprinkle on a couple of tablespoons or so of dukkah. Serve with warmed flat bread, crispy pita chips or crunchy crudités.