What to do when the boss always assigns you odd jobs?

Start by categorizing them. Your core KPIs should occupy at least 60% of your time and energy. If other miscellaneous tasks take up more than that, communicate with your manager. Instead of complaining about having too much work, tell your manager that you are concerned about the completion rate and quality of your core KPIs. Usually, when your manager assigns you temporary miscellaneous tasks, they often haven’t considered your workload—they might just assign them arbitrarily, or they might think it’s okay to give them to you, so don’t let them get away with it.