Cut pumpkin down the center, stem to bottom, and remove the seeds.
Lay the halves flat side down and cut them into ¼ to ½-inch slices, going all the way across the halved pumpkin.
Using a paring knife, cut off the pumpkin peel and the stringy edge of each slice. You may want to cut some of the larger slices in half.
If using seasoning, sprinkle it over the slices.
Lay slices evenly spaced on dehydrator trays.
Set your dehydrator to 135°F.
Dehydrate for 8 to 12 hours until the pieces are hard or completely dried.
Cool the dehydrated pieces to room temperature.
Store treats in an airtight container.