Your particular circumstances will determine how best to go. Egg production is a long-term commitment. For best results, you need a regular clientele. Egg production should occur throughout the year. Once established, a farm can make a healthy profit from the eggs.
Many people also find that chickens are fun animals and can even make wonderful pets.
My hens also ate some of the eggs. They were fed free choice. As a hobby I have 14 chickens,egg layers. Used under License. It was one of those perfect English autumnal days which occur more frequently in memory than in life.