Hi there
Never thought of doing it found this on the web;
[The seeds can be brined and then roasted, much like pumpkin seeds can. They taste similar, but do have flavour undertones with a sweet tang and pithiness similar to unripe hachiya persimmon but not anywhere near so acrid.
Rinse off the soft pith, then toss in a medium-hot frying pan with a teaspoon of oil until they start making popping noises. Drain them on a piece of kitchen towel to soak up any excess oil then sprinkle with a little salt.
These make a further nice addition to sprinkle on the top of a squash soup.]
Will definately give them a try as I love pumpkin seeds.
Hope this helps
xx