Diagnosis Needed

[chiltepin]

What is this again?  I think maybe over watering, but I dunno.  No ferts burn that I am aware of.  I do use Tomato Tone diluted and epsom salts but the issue didn't seem to be associated with a recent fert application.  Been hot here, relatively speaking, hate to say compared to the rest of the US, but 80+ degrees with equal humidity.  Burn from water droplets?  These get an afternoon and setting sun.  Otherwise, healthy Biker Billy Japs.  Not prolific in any way but I have gotten close to 50 peppers from the three plants, with more ripening and flowers setting.
 
thanks in advance!
 
Jim
 

 

[Spicytigger]

That looks like leaf miner damage to me. The tracks throughout are a parasite that is place there by a fly and it burrows thru the leaf eating till its mature.
 
My 2cp

 

[mpicante]

Definitely leaf miners.Pull off those leaves and get rid of them quick.I like to burn them population control.