This far I've found this one is working, having to set a Timeout of 1ms for the action to complete after chrome's auto-filling ..
$(window).on('load', function() {
setTimeout(function(){
$('input[name*=email],input[name*=Password]').val('-').val(null);
},1);
});
I'm wondering if there's any way of attaching this function to chrome self-completion firing, or even, redeclaring it