No sir, not every day. Only when needed. There are a few variables..... like are you growing in pots, or in the ground? The ground retains more water and tends to need less watering. In pots usually need more. The watering regimen is especially important to the quality and heat of your peppers, as well. Too much water can leave you with bitter tasting pods. Stressing them a bit and only watering when needed will increase the heat level - along with fertilizer routines, etc. - Best bet is to check the condition of your plants at dusk and see if they're sagging, then water as needed. If you see them really wilting badly, then you should water them as soon as you see they need it. I usually water mine when they look like this:
LOL thats how one plant that i have at work looks like.. People come buy and water it and im like wtf dont water my plants.
Also what kind of fertilizer is best? I use a Jobes fertilizer spike.. My peppers are pretty bitter and i water the plant every 3 to 4 days or when its just way to dry.