Hi buddy, more than spots, they are holes, clearly made by insects, certainly crickets or similar animals. The damage is not recent because the holes have healed, I think a week ago. There is little to be done against these creatures because even if you want they are resistant to pesticides. The only solution is to protect it with a mosquito net but it is not good for guerrilla grow👮♂️. The leaves won't die, don't worry.👊