Oh! I've been locking down on day 26! No wonder I may have had so many Mal posions in the past!!!
It's ok! Honestly a couple days early or a day late shouldn't hurt your hatch as long as you don't candle and see a clear early hatch like yours appears to be preparing for!
Also something to consider, when you set very fresh eggs like laid within 1-3 days of setting in the incubator, those eggs will hatch earlier than an egg that has been sitting out for 5-7 days before setting.