Those small yellowish oval bits at the node look like they could be early nanners (pollen sacs), but the yellow light makes it hard to be sure. Under white light with a loupe, look for small banana-shaped yellow sacs without a white hair coming out of them, since normal calyxes always have pistils. If they are nanners, pluck them out with tweezers now and check every day, and if more keep showing up, remove the plant or isolate it, because one burst can pollinate everything in the tent. Common triggers are heat, light stress, light leaks during the dark period and late-flower stress, so check temps under 27°C and make sure it's fully dark at lights-off.