They dont look really over fed to me.
Here is one link on over feeding. Thete are many others if you google it. Unfortunately, not everyone agrees 100% on what symptoms show up for whatever happens to be wrong. Expect many different opinions
Over-enthusiasm with nutrients can burn marijuana plants. Knowledge is power when it comes to big buds. So, how to prevent and treat nutrient burn?
www.royalqueenseeds.com
What is your EC or PPM level?
PH?