Poke holes all over squash with a fork. Put squash into the oven for 4-6 minutes, or until slightly softened. (In five-minute intervals.)
Cut squash in half lengthwise. With a spoon, scoop out seeds and discard it.
Drizzle olive oil over both halves of the squash and rub it all over (including the skin). Sprinkle squash with salt and pepper.
Place squash on an aluminum foil wrapped pan and bake for 50-60 minutes, or until flesh is tender.
Remove squash from the oven, allow to slightly cool, until safe to handle. Put the oven on broiler setting.
With a fork, scrape the flesh of the squash removing most of the inside leaving only a sturdy shell behind.
Place the spaghetti squash flesh into a medium bowl and add remaining ingredients. Mix well together. Divide the mixture into the center of both squash halves. Top with additional cheese and bacon.
Place squash into the oven and broil until cheese is melted and golden about 2-4 minutes.