Wash and clean the pepper under cold water. Pat dry.
Lay the pepper on its side and using a sharp knife slice about 1/2" from the stem end.
Scoop the seeds and pith out using a spoon.
For rings: Turn the pepper on its side again and slice through the entire vegetable from one side to the other to create rings as thick or thin as desired.
For strips: Cut the seeded pepper into fourths. Press each fourth flat on a cutting board and slice down the length to create strips. These can also be cut as thick or thin as desired.
For chopped/diced peppers: Turn strips at a 90° angle and cut in the opposite direction. Larger strips will result in a chop whereas thinner strips are needed to dice the pepper.
Halves: Once seeded, slice the pepper in half either vertically or horizontally depending on preference.
Notes
Peppers often make an appearance on the EWG's Dirty Dozen list as being highly contaminated with pesticides. This is a vegetable worth buying organic if possible.