I have a bathroom outlet on its own circuit. The outlet is a GFCI receptacle but the circuit breaker in the panel is also a GFCI breaker. It's an odd size breaker in width and I'd like to replace it with a normal 20amp breaker. Do I really need a GFCI breaker if the outlet is also GFCI protected??
Nope. You don't need redundant Ground fault protection, and can use a standard breaker if the device is a GFCI type. Make sure that there are no other devices also connected to that breaker before swapping it out for a non-GFI one (outside outlets, garage, etc).