I wouldn't say that she love legosi, but more like, it's something she's proud of, her eggs being the best there is and having someone enjoyed it (I bet that if it's not legosi, she would think and behave the same if that person is sitting next to her), makes her feel good, and I still believe it's not love she felt for her. Just imagine if she's a writer that have a fan sitting next to her unknowingly (and that's pretty much already explained in that one chapter honestly lol, why am I here....).
But yeah, I love beastars, though I still haven't watched the anime. The manga already draw me in from the first time tho