What to do:

Separate egg whites from yolks. Save yolks for future use
In a small bowl, whisk egg whites until frothy
Add salt, sugar, and spices to the egg whites
Stir the pepitas into the egg white mixture until thoroughly coated
Line a full sheet tray with parchment paper
Using a rubber spatula, spread the seeds onto the parchment paper in a thin, even, layer
Bake at 350°F (low fan) for 20 minutes. Every 5 min, stir the seeds and spread them out evenly