I believe it’s because 16/34 is now shut and they have opened a temporary short, narrow runway 10L/28R on the taxiway because the main 10/28 refurb still isn’t finished. No instrument approaches apart from a VOR letdown to circle which given the terrain down there looks like it could be quite sporting onto the temporary runway.
More info
http://www.easyjet.com/en/help/prepa...el-information