I took off my oil pan today to change the gasket and noticed these metal fragments in there. The cars been driving perfectly fine and sounds fine. What do you guys think it can be?

 

Are those plastic? aluminum? metal? rubber?
It could be old gasket material, could be timing chain slider, could be piece of oil filler cap, could be anything that entered the engine during valve cover work..

 

If the car is running fine, then you didn't spin a bearing. You would hear it because it would be banging all over the place...

Are you sure they are metal? If so are they magnetic or not? They could come from a variety of places...