Hi! The tip of the plant is turning black. Is this normal?
sometimes there is some innocent darkening on the stems (of pepper plants) like this. Since the leaves look perfect and flowers look healthy and are about to bloom- it is probably nothing to worry about.
But just to make sure, gently touch the stem. If it is solid/hard- it is ok. If it is completely soft- than it is bad. Also, if numerous leaves and/or flower drop off (and there is no obvious reason for that)- it might be bacterial infection.
Looks like pretty normal pigmentation.
Natural pigments are good (and healthy). For you and your plant.