I have an ornamental pepper plant, have been watering whenever the soil feels moist, as per instructions, and give it indirect sunlight. Over the past few weeks, most of the leaves have started wilting or shriveling up, and have been getting small brown insects on the bottoms of the leaves-tons of them, so much that they pile up under the plant. What's up with this? How can I make it stop and make my pepper plant healthy again? Thanks for any help!