Pineapples can be tricky to slice due to their shape and size, but here is some help in the form of this Stainless Steel Pineapple Easy Slicer. It makes it super easy to get at the parts you want to eat and leaves the skin behind.
This device peels, cores, and slices the whole thing quickly and is made from stainless steel. It will produce perfect pineapple rings and as an added bonus it keeps the outer shell intact in case you want to use it as a bowl or as part of your presentation.
It is just $21.74 from Amazon and seems well worth it.