So I know you are going to think why would I want to cut the tops off my young pepper plant? Won't it die? Won't it hurt the plant? Take this example above of this young Shishito pepper plant. Now you can see with my snips I am about to cut just the top section of the leaves. Below the cut area I still have three levels of leaves. I don't recommend cutting your plant if it only has one set of leaves. Only perform topping when there are more than one set, preferably multiple leave layers. The cut will force growth back to the lower levels making your plant more stable with more lower branches as well produce more fruit. One stalk will be unstable when fruiting and limit production but the topping will add more layers and depth to your plant. This topping exercise can be performed more than once to help make a more dense plant. Some will even go so far as to remove flowers to help the plant grow larger or stronger before producing peppers.
I grow a lot of lettuce in the winter/spring season. The one I've come to love growing the most is a particular variety called Red Sails. They tend to have a reddish brown hue on the ends of leaves. Such vibrant color and crisp taste. I love adding fresh lettuce to my tuna salad. I'm the type that won't buy lettuce at the store for fear of it going bad in the fridge before using it. When you grow your own its the freshest you'll ever taste.