To me they look like snail eggs.
Just cut that leaf blade off and flush it down the toilet, it is far more certain than nuking an entire plant you intend smoking with chemicals.
Neem might be portrayed as "safe", but in my country it is illegal to use neem on anything intended for human consumption.
Check carefully for any more eggs.
Regardless of which type of eggs they are, you don't want them hatching.
Hope this helps, Organoman.