I have a kitchen drawer that opens slightly. How do I adjut the drawer slide to prevent this from happening?

If it is only the top portion of the drawer that looks open you can lower the drawer guides just a little to make the front of the door be flush.
If it is the complete door that after you shut it then it open a bit by itself that is a problem with the drawer guide. The guide has a little dip in it where the drawer roller is suppose to fit when the drawer is closed, maybe you can move the roller just enough to fin properly.

I've been having the same problem with a couple of drawers and figured my toddler had something to do with it... like bending the guide, etc. Thanks for input, I'll look more closely at it