TexasCHLforum.com

Boycott Pizza Hut if you want, but most, maybe all, of the major pizza delivery companies have the same policy. I drove for the other two, and at that time anyway, they both prohibited any kind of weapon. A 4-D maglight and a big pocket knife were ok.

As far as this: Howe's co-worker Kimberly Babis said Spiers should not have been armed on the job, no matter what the safety concern. She said most drivers have the right to refuse a delivery if they feel it could pose danger.
I don't think you'd keep that cushy pizza driving job long if you refused to deliver when you felt "unsafe" more than once or twice.

Most big name pizza places are franchise operations, and the owners do not have much say in policies like this one. FWIW.