Can you change a field label in the Django Admin application?

If your field is a property (a method) then you should use short_description:

class Person(models.Model):
    ...

    def address_report(self, instance):
        ...
    # short_description functions like a model field's verbose_name
    address_report.short_description = "Address"

the verbose name of the field is the (optional) first parameter at field construction.