Chicken suddenly laying in the run instead of in the nesting box

[janf1914]

We have 4 hens. All have been laying since last fall and usually they all lay in the 2 nesting boxes that we have for them. Suddenly, over the last week or so, we have 1 that has been laying outside in the run under the coop. It's making me nuts 'cuz it's hard to get to. I'm pretty sure which bird it is. How can I get her to stop laying in the run and go back to laying in the nesting boxes? Any ideas?

-Janet
Married to a wonderful, handy husband with 3 beautiful daughters and 6 silly chickens - 1 BO, 1 RIR, 1 EE, and 1 GLW. (and 2 new OEGB’s!)