Another dish that screams for modification. Use your own favorite pizza toppings. Make it vegetarian, Hawaiian or even change the sauce to Alfredo instead of pizza sauce. Just make sure you use the same amount of liquid so the pasta has enough to absorb.
I recently tried freezing it before cooking and it worked beautifully. It wasn’t fully thawed when I started cooking it, so I added an additional 10 minutes to the cooking time. Freezes well after cooking, too.