Okay so just gone and checked on her bonus is that we have a egg! But she is sneazing again. I would post a video of it but not sure how...any ideas on a sneazing chicken is it bad?
Just keep an eye on her. If it continues or worsens have a vet check her over. Some of mine have sneezing fits - if she starts having any nasal discharge, goopy eyes, worsening breathing isolate her immediately. It's likely nothing - do you put probiotic/electrolytes in the water?