This is pretty straightforward. The existance of the epigenetic mechanism is, itself, a result of Darwinian evolution.
Where epigenetics seems weird to people is simply that it goes beyond the modern synthesis -- i.e. it's not just DNA base pairs. But plain-ol' Darwinian evolution doesn't depend on genetics via DNA base-pairs, it depends simply on inherited characteristics, however they are inherited.
Where epigenetics seems weird to people is simply that it goes beyond the modern synthesis -- i.e. it's not just DNA base pairs. But plain-ol' Darwinian evolution doesn't depend on genetics via DNA base-pairs, it depends simply on inherited characteristics, however they are inherited.