So, there's a number of posts on this Forum discussing the conspiracy theories that are circulating right now, which you can follow or investigate if interested. If you have some actual feed you believe has been causing problems
@Aunt Angus has generously offered to test some feed for us to make sure it has what it's supposed to have nutritionally.
For myself, I've been feeding Purina All Flock (20% protein) from Tractor Supply for 8-9 months (since birth for my current flock), and have actually had my egg production increase when the weather was warm, sunny, and my new layers started laying. The only decrease in production I've seen has been with overcast/cloudy weather. Even unseasonable cold weather hasn't affected my flock. I haven't seen any problems with laying that I was able to link to the feed.