Go ahead and eat any of the newly layed eggs without any worries. No reason to worry about the dust on your flock for external parasites.....backyard flocks are producing the most healthy eggs you can consume.
Can't compare them to any abused caged, commercial hens that produce grocery store eggs that folks place in their grocery cart without any concerns?
Home Grown is better and healthier, no need to worry, in my opinion.
Congrats, with the better eggs for your family and friends!