Yes sir.. sure looks like it.. Banana protrusions are unpredictable, and it can appear even in the most ideal settings. Sadly, it could also start fertilizing females. A few nanners would not cause much damage. However, if there are plenty, consider an early harvest to cut losses and prevent the flowers from forming seeds. You could try plucking the one's you see but you also run the risk of spreading it more. If it's just one plant I'd suggest removing it from the others if possible.. 👊