Short answer
Yes, that's fine. Plain, unsalted pumpkin seeds are safe for cats, even kittens, in very small amounts like a few seeds. Just make sure they're chewed to avoid a choking risk. Offer fresh water and keep an eye on her for any unusual signs like vomiting or diarrhea. If you notice anything worrying, give your own vet a call.
Pumpkin seeds — Food safety facts
Safe to share · Cats · full breakdown on the linked food page
Plain unsalted pumpkin seeds are safe in small amounts.
The full verdict, portion guidance and serving notes are collected on the Pumpkin seeds food facts page.