My pepper plants are in the sun and are 12" tall. They are nice and bushy and fertilized with 10-10. I have 1 pepper on 1 plant. It seems like the top of each plant has a lot of growth but no blooms and if there is a bloom, they fall off.
Why Don’t My Healthy Looking Pepper Plants Produce?
Certified GKH Gardening Expert
Add more phosphorus to the soil. Your soil is probably lacking this and peppers need this to flower. This article will help: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm
This article should help as well: https://www.gardeningknowhow.com/edible/vegetables/pepper/pepper-blossoms-falling-off.htm