For frozen pizzas I will rearrange the pepperoni so that I don't have to slice it. If I need to, I will split some pepperoni in half so there will be a clear slicing line. It's honestly a life improvement.
The 12-10 slice has clearly stolen the tip from the 10-12 slice. Obviously this was done to avoid the creation of a 6 piece super-slice but it still should not have been allowed.