No, you can't. Unfortunately, a font file is not able to be installed on a Chromebook.
The Chromebook operation system is designed in such a way that the programs will not be run locally on the Chromebook itself, but all programs run with a browser in the cloud. So even if the font could be installed on a Chromebook, it doesn't do anything.
As we have noticed that especially within Schools the use of Chromebooks has grown exponentially, Dyslexie font has developed a cloud-based online office suite called Dyslexia Office, which allows Chromebook users to work with the Dyslexie font.
The Dyslexia Office can be purchased on the Dyslexie font website in different types of packages. As we will store your documents you can select the size of storage that is needed for your way of work. The license is a monthly subscription fee, which starts at roughly 4.99 USD.
The Chrome extension also works on the Chromebook. This Chrome extension is included in all packages of the Dyslexia Office we offer.
If you are interested in the Dyslexia Office, you can see a short explanation video here: https://www.youtube.com/watch?v=LX8QwgKbNBc
If you want more information on the website, please go to: https://www.dyslexiefont.com/en/dyslexiaoffice/