yeah dude that is called you clutch outer and you will need to replace it, think about it - the metal chunks which chiped off were floating around in you right hand crank case cover and may have deteriorated your selector fork, drum shifter, bearings and all types of gears, at this point id pull everything off to see you selector shift linkage just to check out the condition.
There also seems to be some chips in your pressure plates, yOur clutch plates look fine, just make sure they are not notched.
It is something I would replace and keep on top of so your future maintenance and costs arent extreme, you best replace any broken arts cos theyll just keep chipping and cause more damage.
marc