Best way to implement outputs pins with leds in a parallel way
If driving reasonable inputs, move the output BEFORE (to the left of) the resistor in your Circuit 2 and it should work fine. If driving unreasonable inputs, you'll need a buffer.

Use a resistor as large as you can get away with (experiment) and still see the LED light up to minimize load on the output from the LED. Many modern LEDs are quite visible with a milliamp or two, rather than needing near full rated current to be visible like the ones of days gone by.