First there is no perfect lightning or nutrients feed !
Every plant needs it own characteristics so this one may have some problem with light or feedin or even water !
LoL im kidding don't get upset !
It looks like this right :
So this is a Nitrogen Toxicity ! She must be taking too much Nitrogen !
Reduce the amount of nitrogen that is being fed to the plants. If you are feeding extra nutrients, cut down. If you are in the flowering / budding stage, make sure you're using a formula that's specifically meant for flowering, or else it will have too much nitrogen.
If you are not feeding extra nutrients, you may have "hot" soil that has been supplementing with extra nutrients. In that case, flush your plants with filtered, pH'ed water to help leech out the extra nitrogen.
Effected leaves likely won't recover, but you should stop seeing the problem spread to more parts of the plant.