I just use a regular oven, set around 275-300, and watch and stir. First I make a salt water solution and stir the seeds in it in a large bowl, let sit for a short while, drain and toast. We don’t avoid salt here. :-D I do that with sunflower seeds too. Excellents sources of iron, protein and other good stuff, pumpkin seeds are exceptionally high in zinc. Which is also good for prostate health.
I used to love salt ;) Now I have to avoid it. Check your blood pressure at the drugstore when you visit to make sure you're not hypertensive (over 160 on the top#). It does taste good though... some restaurant's appetizers have over 6000 milligrams of sodium for example, fast food burgers over 1000, etc. Recommended no more than 1500 daily. Don't 'stroke out'!