How important are review articles to secure a tenure-track position? My field is chemistry and I have had successful postdoc experiences for four years. Next year I want to apply for a tenure-track assistant professor position.

My supervisor says review articles are very very important (if not mandatory) for a full professor position. Therefore, they can be impressive for an assistant professor application. He advises me to focus on writing 2 review articles in the next months instead of research works because this can increase my chance. He says 1 review article is more important than 5 research articles in a job application.

Considering the fact that writing review articles is very time-consuming. Is it worth of my time to focus on 2 strong review articles?
I will say, in Physics, I have never heard this advice. I will also say that I have never, ever, heard anything resembling "1 review article is more important than 5 research articles in a job application." I've been impressed by seeing a review when it is Nature, Science, or Rev. Mod. Phys. - though of course it often indicates the advisor's reputation, rather than the candidate's. However, I can also think of a few times when it makes sense to dedicate some efforts to review articles rather than original research, and I did end up writing one as I was applying for jobs.

1) You have been invited to write a review by a journal with a decent reputation in your field. Doing so demonstrates you are taken seriously by the field, and scientists care about your opinion.

2) You are a few months from a job/grant application, and you think you can write/publish the review within this time, but probably won't be able to publish a significant original research article before the application goes in. A review is better than nothing.

3) Your research plans for the future are focused on an emerging field, and your review gives you a chance to both plant your flag and emphasize how important that field is to a broader audience.

If all three points are mostly there, and there aren't other major holes in your CV/application (teaching, details of your research plan, grant-writing), consider it! Beware, though - I found out writing a good review takes more time than you expect, so Point #2 might not be a slam dunk.