Here lies the problem. Any potential employer can name a number of reasons why they do not hire a potential employee. You would have to prove that you were discriminated against. But, trust me, they will just say they hired someone else with more experience, making your claim invalid.
When one gets facial tattoos, they need to realize that not all people find them as attractive as they do. Some people are actually offended by inked faces or those with metal stuck through their faces via piercings. Especially in an establishment that serves food as it can be very unappetizing to be served with someone with an inked face or turn the stomachs of people to see nose, eyebrow, or other facial piercings.
I am not saying that I object, but there are restaurants that need to maintain their image and maybe facial tattoos and piercings are not that popular with their customers.
If one wants to ink their face or pierce their face, I would think that type of appearance would be more acceptable in a biker bar or other very trendy establishment where it is more acceptable rather than main stream family restaurants or those that cater to businessmen/women. Just saying.