It’s perfectly normal, and quite common, for a young pullet (under a year) to lay small or weird shaped eggs. At this age, she is just beginning her laying journey, and these small, (sometimes) yolkless first attempts are known as “fairy eggs.” This happens primarily because her reproductive tract is a complex assembly line that hasn’t been finely tuned yet.
While your pullet may look like an adult, her oviduct is still physically maturing. As she develops over the next several weeks, her body will become more efficient at processing bigger eggs.
Generally, tiny eggs are no cause for concern as long as your pullet is bright, alert, and eating normally. You should see a noticeable increase in egg size in due time. Keep in mind that most pullets don’t reach their maximum egg size until after their first adult molt. To support her as her production ramps up, make sure she has access to a high quality layer feed and a separate dish of oyster shell for calcium.
TBN Ranch Chicken Keeping Resources 