Abnormal/Inconsistent Layer - Should I be Worried?

[UneggspectedChickenLady]

I’m stumped by my girl’s laying and want to ensure there isn’t anything I should be doing differently or watch out for… Miss Angel is a 15 month old Silked White Easter Egger. She has this cycle of laying for about 2 weeks then stops for a few months. This morning she laid two fully formed eggs with hard shells this morning. Is this unpredictability and start/stop ok for her (while maybe not normal)? She gets good quality feed, fermented food, a little augmentation with Avian Health Shake bc of our crossbeak’s mash that everyone enjoys, Black Soldier Fly Larvae and occasional healthy treats (veggies). Any thoughts and/or advice is greatly appreciated!