You could be. But the calcium deficiency is probably your bigger worry right now. I have a feeling a few feedings with just some CalMag would do them right. Then just back off the Nitrogen by like a 1/4 and continue from there.
I found this nice and easy setup to basically diagnose any problem. The red/orange dots are from Calcium deficiency and the leaves curling in is Nitrogen toxicity so you were correct. Thanks for the help. I really do learn something new almost everyday from doing this it's amazing.