Bird's nest fern deformed leaves

[Matmtl81]

Need help with my bird's nest fern. For sometime my plant has been growing deformed leaves and browning sometimes. I taught the plant was doing super good as it put out almost a dozen new leaves at once. But they came out even more deformed, some like a fork shape. All I read is that it could be over fertilizing, but I don't fertilize. Any idea what it could be ?

 

[Tetters]

Welcome to the forum @Matmtl81 As long as you cannot see any insect activity which could be causing this, I think the chances are your fern is fasciated. This is caused by a hormonal imbalance I believe.