The peppers were tiny so I sliced them into small, thin circles and just laid them out in our very warm sun porch.
But there was no seed in them but a pith of some kind. Did that need to be removed? Or does it?
If they aren’t loaded with seeds I wouldn’t worry about trying to remove the pith. I don’t even fight too hard to get rid of each and every seed. By the time you finish dehydrating and grind them up you won’t notice it’s in there.