You mentioned a cleared spot in a wooded area – are your peppers getting 8-12 hours of full sun every day? That is essential for starters – not just for peppers, but for any fruit-bearing plant.
You also mentioned that the plants look good but aren’t producing fruit. That is likely a lack of one or more nutrients, or an imbalance of nutrients, rather than too much nutrients. What most often happens is that too much nitrogen is used without the proper amounts of other needed nutrients. This can cause a lush green, often soft, plant with little or no fruit.
Plants need 16 nutrients, 3 of which are supplied in the air. The other 13 must come from the soil or from man. Most soils are depleted, the result of thousands of years of leaching from rain, snow, crop removal, etc., so we need to put back water-soluble mineral nutrients in the right amounts to assure good vegetable crops.
What we consider to be the world’s best fertilizer formula for vegetables, as well as other plants, is included in the On-line Education section of this website, as well as in The Mittleider Gardening Course. It will guarantee you good results, if used properly.