Stephanie,

I grow pepper plants in pots and this looks like a large pepper plant without peppers; looks like it could use some vegetable fertilizer. Also, some mulch would help shade the roots and retain moisture better. If these are voluntary plants that were transplanted into pots, they are probably hybrids and may not produce the true hybrid . However, it's so hot that a normal pepper plant that hasn't been fed in a while would find it hard to bloom without some partial shade and fertilizer. This may be a hot variety of pepper and if you like peppers you may want to try the above and give it some time. I've had pepper plants get bigger than these and had a lot of peppers.