Yep. Lettuce is pretty forgiving. These will be individually planted for heads rather than cut and come again.
I really recommend overwintering hot peppers. You probably don't have space issues? They will manage as long as temps are mid-20's to above freezing. If you keep them in the house at temps comfortable for you and provide supplemental lights, they will bloom and fruit.
For growing during the season -- I'm not sure if the photos links are still working but a while ago, a member (who hasnt been around for a while) - doubledog farm- posted that he hardens off transplants in a large circular metal water tank.
This might be an idea you could adapt for keeping potted peppers sheltered and increasing heat value during the growing season?