I'm impressed you have that many chives from seed! I have the worst time with regular chives, garlic chives easier. As for watering, I try to water the dirt, not from above if that makes sense. If they are out with rain, a different story!
If that is parsley, will need thinned soon, with pulled leaves used in the kitchen. Suggestion is to thin some, see how they are doing, thin again, and get a balance.