Looks like your plants caught some hitch hikers!
If you can, pick up some Amazing Dr. Zymes. It will take out any pest or fungus that shows up in the future, as well as whatever is chomping on your plants.
If the price is too steep for you at the moment, find a couple of cigarettes, tear them up and soak them in isopropyl alcohol for an hour or two. Then, put it in a spray bottle and fill it up with water. Finally, soak your plants, top and bottom of leaves! Leave no leaf unturned.
I hope this helps.