Hey, buddy! 👋
It's not a deficiency or a problem at all! It's just new growth! New growth always comes with a brighter color than the already developed leaves! 👌
Don't worry, you're doing great! 👌
Good luck, bro! ✊😇
I don't think you're having any issues, the newer growth coming in a little lighter is normal as far as i know. They look super healthy in my eyes, nice job!
It is normal to have light green leaves at new growth points. This can be confused with light burn sometimes, but I don't think this is the case for your plants.
Happy growing!
Y