Am experiencing the same problem, which persists even after reinstalling the Pebble app and resetting the watch. Applies to watchfaces like Modern and TimeStyle.
an adb logcat gives the following when I tap the settings icon:
09-17 15:05:48.569 4586 4676 W Pbl : [JsAppManager] handleConfigRequest: previous config request found
09-17 15:05:48.569 4586 4676 E Pbl : [JsAppManager] handleConfigRequest: could not get AppInfo - storing config request for post-install launch
My default browser is Chrome, and Pebble is allowed to draw over other apps.