Spicy spaghetti squash casserole is a delectable one pot meal. Strands of spaghetti squash are tossed with cubes of chicken and green chiles (if you cannot find fresh, canned green chiles will also work). Before it's baked, the casserole is topped with plenty of Monterey jack. If you are a fan of spicy foods, you can substitute one cup of the Monterey jack for spicy pepper jack cheese. Think out of the box and make this spaghetti squash casserole.