It is very likely your plants will naturally lose the frost nipped leaves--you will find out in short order over the next couple of days. The loss of leaves may weaken the plant to the point of no return. However, since some green leaves remain the plants may rally. To be on the safe side, you might want to start some new seeds today. Fertilizers, apart from some mild-acting compost tea, are likely to burden the plant with extra work while it is recovering from this shock.

Here is a link that might be useful: HarvestToTable.com

Thank you for getting back to me so quickly. I don't like the idea of having to start over, but that may be for the best. I'll keep an eye on the ones I have now and see how they do.