In my family we have pizza every Friday night at my mom's. I am not a huge pizza fan, so I usually just bring something along for me (leftovers), or I make a legal pizza on a ww pita with sauce, cheese, veggies, turkey pepperoni, etc., or occasionally I'll get a frozen SB pizza. That works for Ph2.
On Ph1, if I had a hankering for pizza, I'd make the meatball casserole (in the recipes section), or anything with sauce and cheese on it - broiled tomatoes and mozzarella, maybe. Eggplant parmesan? Hope those ideas help.
Life's a journey, not a destination.
It's easier to stay on plan than to get back on plan.