Short answer
No, you should peel jicama before giving it to your cat and only serve it plain. The skin is tough and not edible, which can cause a choking hazard or upset stomach. A small amount of peeled, raw jicama is safe as an occasional treat. Just offer a tiny piece and watch for any digestive upset.
Jicama — Food safety facts
Safe to share · Cats · full breakdown on the linked food page
Peeled, raw or cooked, in small pieces. The skin and seeds are not edible.
The full verdict, portion guidance and serving notes are collected on the Jicama food facts page.