Do not worry. This is normal in a Ruckus network and the APs will automatically switch channels as needed. This will not have an impact on your performance since Ruckus has unique technology built in to the AP such as Beamflex and ChannelFly which will ensure the AP will performs always at its best. Focus on customer experience and worry only when you hear or seem client impact, if any.
You should need to worry about channel selection nor need to disable any channels in your network unless it is a very high density with a complex topology or AP deployment scenario.
Hope this helps.