If it's just for me I use two eggs.  Today I added green bell pepper, onion, mushrooms, bacon, cheddar cheese, and a little salt & pepper.  I usually beat the eggs then just add all ingredients to eggs and mix.  I don't measure anything -- just add until I think there's enough of everything.  Then pour in a hot greased skillet until it's nice and golden brown.  After I transfer to a plate I liberally sprinkle Frank's hot sauce on top and make a couple pieces of toast.
IDGAF about fluffiness, but mine usually turn out pretty fluffy.