The answer to 'why is my circuit breaker flickering lights' is that a flickering circuit breaker is usually a sign of an electrical issue or overload. This can happen when a circuit is drawing more power than it's designed to handle, causing the breaker to trip on and off rapidly. Common causes include faulty wiring, too many devices plugged into a single circuit, or a malfunctioning appliance.
If you notice your circuit breaker flickering, it's important to address the problem right away to prevent potential fire hazards or damage to your electrical system. Try unplugging any unnecessary devices on that circuit and see if the flickering stops. If the issue persists, you may need to call an electrician to inspect your home's wiring and identify the root cause.