Preheat the oven to 400 °F. Cut the spaghetti squash in half lengthwise. Scoop out the seeds from each squash half with a spoon. Put the halves in a pan facing up and drizzle 1 tablespoon of olive oil on each squash half. Season each half to taste. Bake the spaghetti squash for 45 minutes or until the halves are soft. Remove the spaghetti squash and let it cool for 5 to 10 minutes. Drag a fork against the cooked squash flesh to create strands. Toss the strands with spaghetti sauce before serving them.