if you know you're 100% bug free, leave it alone.
if you just fought off bugs or if you currently have them, then tape it with masking tape or duct tape. the injury gives off a smell and the bugs can pick it up and be on their way to it so they can feast on the open wound.
but the bottom pic youre missing some leaf so you need to see if maybe you damaged it around your work station or if bugs have eaten the leaf. if the latter, then make sure you tape the injured branch and look into bug control/prevention. the bugs could be eating away at the plant making it seem like a deficiency.