EL, brown spots could possibly be down to a nutrient deficiency, though it's hard to tell without seeing the leaves. I would suggest, either way, that you feed your peppers regularly with a balanced feed specifically aimed at fruiting vegetables - a simple liquid tomato feed would be perfect. As well as containing potassium for flower and fruit production, this will also include micronutrients that can sometimes be depleted.
EL, brown spots could possibly be down to a nutrient deficiency, though it's hard to tell without seeing the leaves. I would suggest, either way, that you feed your peppers regularly with a balanced feed specifically aimed at fruiting vegetables - a simple liquid tomato feed would be perfect. As well as containing potassium for flower and fruit production, this will also include micronutrients that can sometimes be depleted.