Heat your oven to 400 degrees f. and line a large baking sheet with parchment paper or use a silicone mat.
Using a very sharp knife, very carefully cut your pumpkin in half.
Then, using an ice cream scoop, scoop out the seeds and insides. Save the seeds for roasting if desired.
Next, cut slices of pumpkin, about 1-inch thick as shown.
Place your pumpkin slices on the prepared baking sheet. Drizzle with oil and sprinkle with the spices.
Using your hands rub spices into both sides of the pumpkin to evenly coat everything.
Roast for 18-20 minutes, depending on the thickness of pumpkin slices, until golden brown and fork-tender. Flip your slices over once during roasting.
Serve as a side or with your favorite dip.
Enjoy!