pests pest or fertilizer issue ?

[lucilanga]

I'm having trouble identifying the problem.
 

 

 
Flea beetle perhaps ?
I also had a yellow leaf ready too fall that had similar hole, so I doubt that's a fertilizer issue.
I have at least 2 plants having this issue with 2-4 leaves affected, others seems mechanical damage.

 

 
The two plants were relatively close by each other.
 
Probably unrelated (no holes), seems rather fert issue on Aci Sivri plant:
 

 
Could the above, by any chance, be snails related ?

 

[kgetpeppers]

Newish grower here but my outside plants had similar holes only on SOME of my plants. Went out at night and was slugs. Crap beer in a bowl took care of some..

 

[Laphroaig]

Also first year grower But i had this exact same problem
 
And i also found some snails/slugs under my pots wich i destroyed.
Beer trap didn't work for me, but i do recommend looking under your pots.

 

[lucilanga]

Thing is, it happens in a greenhouse. I have a molluscicide barrier round the greenhouse so I doubt they can cross it.
Possibly I already have something inside the greenhouse.

 

[rebelgrower3]

Could be grasshoppers I've had holes like that from them.

 

[lucilanga]

Hmm, I've seen at least one or two leafhoppers, jumping around. But do they do that kind of damage ? They were pretty small 2-4 mm.
Lightly neem oiled everything last night.