based on what I looked up for most Prescott ZIP codes, it is probably around 5 weeks too late to transplant them out. If they take around 100 days to mature, you'll probably get frost before you get mature peppers.
But if you're in ZIP code 86315, you might only be a week or so past the ideal latest date to transplant them out. However, starting from seed, maybe it is too late even there.
But those are just general guidelines: you might have a warmer than usual micro-climate and a fast-maturing pepper variety.
Dave has a Webapp for planning ideal times for starting different crops in different areas:
http://garden.org/apps/calenda...
(Webapps, "The Garden Planting Calendar")
Most of the Prescott, AZ ZIP codes have an average first frost date Oct 6, ut I see you're near a valley, and elevation has a big effect.
Most of Prescott: Oct 6
ZIP code 86305: Oct 12.
ZIP code 86315: Nov 3.
As Dave says on that page, "Most tomatoes, peppers and eggplants, for example, require around 100 days to harvest, therefore you'd want to transplant those into the ground around June 28."
But if you're in ZIP code 86315, the date changes to:
".. therefore you'd want to transplant those into the ground around July 26."