You can set up two fields in the first-page footer...

On the left margin, use a field like this (you could use a StyleRef field to pick up the chapter number):

{ IF { = MOD({ PAGE },2) } = 0.0 { PAGE } “Chapter 1” }

Tab to the right margin and insert another field with the True text and False text reversed:

{ IF { = MOD({ PAGE },2) } = 0.0 “Chapter 1” { PAGE } }

This kind of construction can also work in the headers of the other pages, in which case you don't have to turn on Different Odd & Even Pages.