If you can *fold* the pizza, with one cut you could ideally create **infinite** slices. Just fold the pizza *N* times along the symmetry axis and cut it in the middle.

What you obtain is *2(N-1)* triangular slices folded in half, and ready for eating.

5 folds, 1 cut (I know what you're thinking, dirty mind):

![enter image description here][1]


  [1]: https://i.sstatic.net/DxzNC.jpg