Preheat the oven to 400°F (200°C)
Wash the pumpkin
Cut the pumpkin in half
Scoop out the seeds and stringy pulp
Cut the pumpkin into wedges or chunks
Peel the pumpkin if desired
Place the pieces on a baking sheet
Drizzle with oil
Add salt if desired
Toss to coat evenly
Spread in a single layer
Roast for 25 to 40 minutes
Flip halfway through
Roast until tender and lightly browned
Remove from the oven
Let cool slightly before serving