I'm getting black spots that grow and turn brown on my immature bell peppers. It's only happening on one plant (the only one in a container, so maybe it's the soil although I tried to only put good stuff in there; compost, potting soil, etc.) The plant is otherwise the picture of health: lush foliage, bushy, and numerous little peppers growing and new flowers. I'm afraid it's some type of fungal infection, but haven't found much from searching the net.
There are also black areas in all of the "crotches" between the main stem and the branches on this plant, but as I'm new to gardening, I'm not sure if that's related, or normal, or something else altogether. Pic above. Any help would be much appreciated!