Your plants seem to be very overfertilized.
Leaf Burn: Edges of the leaves turning brown or yellow.
Dark Green Leaves: Leaves may appear very dark green, which is a sign of excess nitrogen.
Leaf Curling: Leaves may curl or become crispy.
Don't give any more fertilizer for now and when the plants recover... you can think about removing the lowest leaves in the 2-3 week of flowering.