I have three that started to go broody while I was away. There are still a few wooden eggs in the nests that I used to get them all laying in a nest.
For now, I am keeping an eye on them, occasionally shooing them off the nest so I can check for eggs and so they will go eat, drink, poop and run around a little. My expectation is that, as runners, they will sit for a number of days and then give up. They can be lured off the nest with breakfast, peas, fresh swimming water, and opportunities to forage in the garden, so it is not at all alarming to me.
Two of the broodies have stopped laying. But with eleven of them, and only two humans in the household, this is not a worry!