Regarding fertilizer, the fertilizer I used was a 12%-3%-13% nitrogen/phosphate/potash, also with 1% sulfur, .75% iron, and .35% manganese. I used their guideline of 1 tablespoon per square foot, and it is labelled as a 'slow-release' food. I'm a noob when it comes to this stuff though, so those percentages mean little to me.
So looking at the plants, the two banana pepper plants are roughly 20" tall, the one has a pepper about 5 inches long on it, and the other has two peppers about 2-3" long each. I'm thinking I may cut off those peppers here soon and keep the flowers away for another few weeks and let the plants get a little bigger. The leaves seem to be OK, they are pretty flat and normal shaped.
The two bell pepper plants are maybe 15-18" tall, and haven't flowered at all. The leaves look like they may be puffed up a little bit, but since the other pepper plants don't appear to have this problem, not sure about the calcium. I checked some fertilizers and plant foods when i was out today, but didn't see anything with calcium in it.
The three jalapeno plants are about 18-20" tall, but are still very thin. These were spaced pretty close together, so I spaced them out a bit, and pinched off the flowers so hopefully they can grow out more.
Lastly, there is a thai chili plant, but I just got this as a seedling from a coworker last week, so it's still teeny tiny. Hoping it takes off, because those babies will be hot.
All in all, I think it's probably for the best that hardly any fruit is growing, as the plants could stand to grow a little bit more first. I spaced them out more, and removed some herbs that were growing in the same area. The 8 pepper plants are now spread out in a 2x5 foot bed, in 2 rows of 4 plants. There is about 16-18" in between plants from side to side, and about 12" in between plants from front to back, and about 6" from the edge of the bed. Hopefully this is enough space for them to take off. I'll have to scale back the watering of the plants, which should be easier now that there is nothing else in the bed except the pepper plants.
I'll have to take some pictures tomorrow when there's some daylight to work with again and throw them up here. Thanks all for the responses, I'm sure I'll have peppers soon enough, and if not, no big loss. At least it looks better out there than having a bunch of weeds growing in the bed.