They should definitely be bigger.
Live and learn.
You will see a dramatic increase in growth over the next week.
They were severely stunted from nutrient toxicity.
The new growth is not so badly damaged and the next leaves should be fine.
As long as you take it easy on the nutes.
You wouldn't give a baby a T-bone steak would you?
Just remember light is the true food, everything else is just supposed to help.