Can I fix or replace the quick release lever on my thru axle?
Anyone have an idea as to whether this is fixable? 


It's not worth it.

Quick release skewers are cheap.  The medical costs you might incur if your "fixed" one were to fail while you're riding won't be - even if you have full medical coverage and no amount of medical care will cost you money, the non-monetary costs of any potential injury from a front wheel falling off while riding are potentially huge.

Buy a new one.