Works with a plain adapter
Micro Four Thirds sits 3.25mm further from the sensor than Nikon Z. You need a 3.25mm adapter, but it can be a plain one — a hollow metal spacer with no glass in it. The lens still reaches infinity focus and nothing is added to the optical path.
Coverage & framing. Micro Four Thirds lenses are built for a Micro Four Thirds imaging circle, which is smaller than Full frame. Expect heavy vignetting or a forced crop on a Nikon Z body.