It's a familiar (very familiar) expression to see if you are ok

Ça roule ma poule est une expression,un langage familier, c'est du l'argot. Dit normalement a une personne féminin intime ou amicale. Comment vas tu? Ça va? ( mon ange, ma chérie ect...? ) in english :Are you ok sweetie?

Sure thing, honey.

It's along the lines of "that floats my boat", "that works for me", something like that.