Absolutely!
You'll need a couple of tools and some supplies, but its very simple. Use a pair of pliers to pull the 3 backplate rivets apart. If they're double capped, (Flat dome) on both sides, then try and separate from inside the leather glove to not scratch the armature.
Once you've got that apart, put the new leather glove and the armature on your hand to test your fit. Once you've got everything sitting properly mark your backplate holes with a sharpie. You can now use a hole punch to put a holes through the leather for your rivets. Slide your rivets through your leather glove and metal armature, pop the caps on and set everything in place with a hammer and setting tool
Couple of things. Double cap rivets can be bought from a bunch of places, either online or instore. Any leather supply store should have a good range, they look like this. Make sure to get the setting tools at the same time.
View attachment 1604972
I recommend taking in one of your separated rivets to get a close match on size and color. I would also recommend replacing the 4 rivets attaching the fingers to the backplate, as these are typically quite a weak point. If you're already replacing rivets its a solid idea. Finally, when you punch the holes in your replacement leather glove, make sure to punch them ever so slightly smaller than what your rivet post needs. leather will stretch over time so a tight fit will help prevent your rivets pulling through over usage.