Would bonita be appropriate for a website with workflow like for example a pizza delivery company?
Bonita platform is great for any application based on workflows/processes. I am not an expert but pizza delivery business sounds like a valid use case to me as it is based on the extended use of data, processes/workflow and screens.
But it is not only about the use case. The right choice will depend on how technical your IT team is/will be, how big you want to invest, how flexibility you need, etc.
You can contact Bonitasoft using the contact us page if you want to study the option further.