You can test your own soil! Take two separate cups and add your soil sample to each. In one add vinegar and the other add some water, stir and add baking soda. If nothing at all happens your soil is some what PH balanced.
spray the plant with epsom salts 1 teaspoon dissolved in a spray bottle of warm water (about 4 cups). that gives the pepper plant a boost of magnesium that is required at flowering time to produce fruit. spray them again 10 days later.