I don’t have a problem with this, as long as it’s not covering her face like a mask.
I would not want a Jewish man denied a job because he wears a yarmulke either.
As an employer I should have the option of establishing work rules including dress code as long as all are uniformly applied and enforced. If an applicant doesn’t like the rules and code, they can apply elsewhere.
Too much interference by too many different factions in the operation of business today lead many businesses to rethink whether they really want to have employees or even continue to operate. We found our business at this crossroad a couple of years ago and as employees leave we are downsizing and not replacing them.