I just had a quick search and found this: https://apple.stackexchange.com/questions/407338/why-does-chrome-need-access-to-bluetooth
Is it possible that when that window appeared you told Mac OS that you didn't want to give Chrome access to Bluetooth?
@Gordon started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I just had a quick search and found this: https://apple.stackexchange.com/questions/407338/why-does-chrome-need-access-to-bluetooth
Is it possible that when that window appeared you told Mac OS that you didn't want to give Chrome access to Bluetooth?