Are you planning on raising them? Mine do this constantly and I don't have time to raise them so they just get eaten by corals or unfortunately sent into the filter socks and/or powerheads.
Clowns are very good parents, if you don’t want to sell them, just let nature take its course.
If you do, take the rocks with the eggs out into another tank or wait till they hatch and take the fry to a separate tank.