@Ludwig-Karlsson, in the "Any parameters?" field, you should remove everything but the ChannelUrl.

Then make your command start chrome so when the full command runs, it will be start chrome https://www.twitch.tv/ except https://www.twitch.tv/ will be the full ChannelUrl value from IFTTT.

79197778-1403-4773-8d0d-d71ed83cab77-image.png

You can test the TRIGGERcmd side like this first:
3634a740-01f8-4a6b-b023-3b5ed848f92b-image.png

It should open a Chrome tab with that url when the command runs.