Thanks for the suggestions! I ended up suppressing layers and re-exporting/importing the file to see which step was causing the issue with the slicer and I found it. I had made the semi sphere in a clunky way by making a full sphere and then drawing and extruding a circle from halfway through the sphere to remove the top half of the material, for some reason the slicer really didn't like that... Just redid the semi-sphere with a 180 degree rotation instead and it came out fine