Looks like whatever it is, can do alot of damage quickly. Maybe a caterpillar or pill bugs. Spray it with some kind of organic insecticide (Unless you feel like useing some strong, non-organic stuff, but be careful). I would get on it before the next night fall as that is when the damage is most likely happening.
Vastok, since im from a contry were Marijuana is strictly illegal i dont feel safe growing inside, thats why iam growing outside. I will look up that oil. Thanks.
Yes use Neem oil to prevent bugs from eating the plants. You should try to secure the area around the plant so other larger animals don't eat the plant in one bite, looks pretty unprotected as is