People always seem to act like some new study is going to prove something unhealthy is really healthy. But our bodies don't work that way. Greasy foods are extremely high in fat, cholesterol, and sodium. Those are unhealthy. Period. Some people may find out that some part of bacon or eggs or whatever can, in small doses, have positive effects, but that doesn't change that some things are bad for us, and regardless of whether or not we're aware of it, the effects on our bodies are constant.
On the other hand, I'd possibly be more worried about Kagami's face here. If those are hot, they'll likely scald her face. Really bad burns. If they're uncooked, that's just asking for contamination, food poisoning, or other diseases.