Pepper plant droopy
This could be from too much or too little water, but it also could be an indicator that there is a problem with the roots or damage to the stems (preventing uptake of water). Peppers like a well drained soil.
Keep the plants well watered when it's very hot and dry. If you do not see them recover, pull up a symptomatic plant and check the roots. See if there are any signs of chewing (i.e., from voles) or other root damage/rot. If need be, it is not too plant to replant.
Remove the blossoms from the plants for 2-4 weeks after transplanting to establish a good root system. See our video on pepper pinching. http://extension.umd.edu/hgic/learn/peppers