It's too late to start more
pepper plants. They take half the season to grow, and then the other half to produce. If you buy your
plants from the store, they should be big enough for you to start another planting.
I don't have a rule of thumb for peas or beans. I do rows, and I can understand what you mean. 10 pea
plants wouldn't feed a person. I tend to ignore spacing guidelines, so I don't know how many
plants per person, but if I had to guess, I'd say 20
plants per person with 80% germination, so you'd need to
seed 25 pea
plants per person. Also remember that peas are cold weather crops. Don't
seed them again until late summer for a early fall harvest.
Beans can produce a lot more heavily, so 10 bush beans per person with 90% germination is 11
seeds. You'll get more than one harvest from the beans as long as you keep picking, but the amount will slowly decline.