I guess it would have to be one of those frozen supermarket ones.
From the big takeaway places, Papa Johns once sent us two pizzas with very few toppings which was not good at all considering how much they charge for a pizza
Flavor-wise my mom likes BBQ chicken and it has so much flavor from the sauce and nothing else. Most other types are okay to me but no matter the brand it's not my favorite. However, store-bought pepperoni can be bad if you get a burnt crust or the crust is thin and weak. Oh yeah, school pizza was way worse than store pizza by far.