You can absolutely roast pumpkin seeds! They are a healthy snack. All you need to do is separate the pumpkin mush from the seeds, spread them out in a single layer on a greased or nonstick cookie sheet, sprinkle a little bit of salt on them to taste (they are a little bland if you don't) and bake them at 350 degrees.

The directions I was given told me to bake them for 20 minutes. I needed almost 40 in my gas oven on a baking stone. When the seeds are cool, store them in an airtight bag or container to keep them from getting soft.

Roasted pumpkin seeds kind of taste like peanuts but have a lighter flavor. Like sunflower seeds, the outer shells can get a little hard during the baking process. If you prefer a softer, lighter shell, you can spray them with a little Pam (or your favorite oil spray) before baking them.

From allrecipies.com
-quote
Toasted and salted, pumpkin seeds have a nutty flavor. They're even better flavored with sweet and savory spices.
-endquote

This is the link to the whole post on roasting pumpkin seeds from allrecipies.com:
http://allrecipes.com//HowTo/roasting-pumpkin-seeds/Detail.aspx

Halloween is a traditional form of event that is a farewell for summers and is about welcoming winters. It is celebrated on the 31st of October usually. In other areas where Christianity is not the religion this occurs from the mid of October till the mid of November, preferably on Saturday night. Pumpkin is a traditional association with the Halloween event and is a part of its decoration.

Whenever the word pumpkin is used Halloween comes into mind and also vice versa. It is best to roast pumpkin seeds on low heat for better results. Baking pumpkin is another activity that can be done on Halloween. Roasted pumpkin seeds are liked by a lot of people. The more they are crisp the more good they are.