"easy on someone's eyes" sounds very awkward to me, although
there may be times when a writer could use it in some ironic or
comical context. It is a figure of speech that has the function of
an adjective describing the thing or person that is pleasant to
look at. It is not about "my" eyes, or any individual's eyes.
That's why "easy on someone's eyes" seems strange to me. "Is he an
Adonis?" she asked. Jenna swooned "Maybe, maybe not. But
easy-on-the-eye doesn't come close..."