Man, what toppings are you having on your pizza? That's an impressively calorific slice.
1 costco pepperoni slice is 700 calories iirc, i can't eat 4 costco slices, but i assume a greasy pizza hut slice from a large pie is close?
A whole personal pizza comes close, but typically the slices are under 300 calories. I haven't had a Costco pizza slice in a while, but aren't they enormous?