While there’s no official or “safe” unofficial apps or software to directly login with your Kik profile online and chat via browser.
It’s rather simple to download an Android emulator and comfortably use Kik messenger online via your Windows or Mac computer.
Here’s a super-simple guide on how to setup your desktop version of Kik:
That’s the most convenient and safe way to use official messenger on the “big screens”.
Bonus — here’s a video, visually showing you how to setup the whole thing: