Hi! Sorry, I haven't thought about this in a hot minute- what happens when you try to play it, does no window pop up? It does look like its executing the program properly. I'm assuming this is hanging for several minutes with nothing happening, otherwise it may just take some time to kick in. Unfortunately I no longer have a chromebook, so can't really debug this (also may not be able to recreate it).
Alternatively, it may be possible to download the itch.io linux client and play the game through that- but I've never tried this so I don't know if it works or not: https://www.linuxmadesimple.info/2020/12/how-to-download-itchio-app-on-chromeboo...