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Are these eggs from a single hen, do you know? If so, have you identified her? Stress is the main reason for these egg anomalies. Sometimes supplemental lighting can contribute to these strange "decorations". But there is the outside chance there's a chronic respiratory infection behind it...

The bloom is applied just as the egg is passed out of the cloaca. Here's the time table for stages in egg production. https://www.thepoultrysite.com/publications/egg-quality-handbook/2/formation-of-the-egg

There's a very small possibility this could be an anomaly due to a virus, specifically a version of one of the respiratory viruses. But there are several benign explanations that are much more likely. One of the most common is simple stress prior to laying the egg that can have a disruptive...