Here's a little secret- In a mister bottle dissolve 1 tsp of Epsom salts in about 3 cups of warm water.
Spray your pepper plants liberally. This vitamin mist will give your pepper plants a boost of magnesium which is necessary during flowering to produce fruit.
Wait 10 days and then Spray them again, liberally. Within a few weeks, you'll have more peppers than you can shake a stick at!
We do this with all of our pepper plants, jalapenos, bell peppers, etc.