Your plants look great, some minor discoloring on the leaves, but that's going to be alright. Yes it's probably a sign of nuits being off, but that might be a fix that leads to larger problem... get some more experience and you'll start to see how to do small tweaks.
Tip: if those big leaves are blocking a bud site you can remove them and the bud will swell a bit more than it would otherwise. Be carful and only take a few leaves at a time till you're comfortable doing it. It will not be a large difference to the specific bud you are looking to get light too, but as you grow more plants that little bit at each site will add up to a lot of bud.