If you go to Settings->Touch & Pedal Settings->Pedal Actions, what is the pedal debounce currently set to? If you set it to something like a second, even multiple triggers of the pedal in a short time span shouldn't result in multiple page turns. If it still does even with the debounce set higher, let me know, as then it would indicate something very bizarre is going on. If it's a ChromeOS issue (which it certainly seems like something might be going on with the bluetooth connection), you could try switching to the beta channel on the device and see if that makes any difference.
Mike
Mike