Hens stopped laying - could the new rooster be the problem?

A few months ago a young rooster got dumped at our property and has integrated with our flock. He’s handsome, healthy and friendly and is mostly skittish and doesn’t bother the other pets or me, my husband or our kids (which is why I let him stay). We have a 5yr old Barred Rock rooster who has been the only one in the flock (who’s mostly lame from some previous bumbledfoot) , and surprisingly these two seem to get along and not have issues.

This new boy does seem to harass the ladies more than our old guy, but they’re all free range and have 5 acres to roam with plenty of space and a very sizable coop with big roosts.

Problem is, our 8 hens have stopped laying completely. I initially thought they were laying somewhere else, or it was the cold temperatures were experiencing in Tennessee. But we haven’t received one single egg in weeks. With eight birds, and days hovering in the 40s and 50s, I would think we would at least see one!

Could this new rooster disrupt the flock enough that they’d all completely stop egg production? Is the solution to just get rid of him? It’s a bummer because he’s friendly, protective (I’ve seen him attack hawks that have gone after the girls) and healthy, but now I’m putting up 10 birds with no eggs in sight and that’s hard to swallow. All other hens are Wyandottes and Barred Rocks that regularly laid 1-2 daily.

Help!