Yes, I agree with Christine.
You can put the pepper plants outside for just a few hours each day. It's known as 'hardening off'; so the plants can gradually make the adjustment from indoor conditions to being in the great outdoors. Just keep an eye on the temperatures, don't let them get too much wind, start them in the shade and gradually introduce them to the sun, bring them in each night when the temperatures drop. You will see a gradual improvement as the plants adjust to the true sunlight.