Cooking spaghetti squash in pressure cooker - Pour 1.5 c water into your Foodi or pressure cooker and place a trivet at the bottom.
Set both halves of your squash inside with cut ends facing up.
Put on pressure cooker lid and close steam valve. Set to high pressure for 8 minutes. Then do a quick release.
Drain water from inside cavity of squash halves and remove from pot. Carefully place on cutting board to cool, they will be hot!
Allow to cool for at least 15 minutes so it's at least cool enough for you to pick it up with a hand towel in your hand and handle it without burning yourself, it will be hot.
Pizza spaghetti squash - Using a fork gently scrape the "noodles" out of each half and into a bowl. Make sure to leave the outsides of the squash in tact so you can use them as "bowls".
Drain water from bowl with "noodles" in it. Add your spaghetti squash and 1/2 c of cheese and gently stir so everything is nicely coated.
Drain water from inner pot and put trivet back in. Place empty half of squash on trivet with empty side facing up.
Use fork to fill squash with spaghetti squash mixture in bowl (fork helps to lessen excess liquid)
Sprinkle 1/ 4 cheese on top, followed by pepperoni, followed by 1/4 c more cheese.
Close air crisp lid and set to 400 for 8 minutes or until browned on top.