While potato cooks, chop onion and green pepper and set
them aside.
When potato comes out of the microwave, submerge in cold
water.
While potato cools, dice pepperoni and grate cheese.
Peel potato and slice into medium-sized pieces. (Potato
will not be fully cooked, yet.)
Brown pepperoni in a skillet over medium-high heat. Turn
off heat and remove pepperoni to a paper towel.
Wipe skillet with a paper towel (make sure the skillet
has cooled) and return it to the stove. Pour olive oil into
skillet and arrange potatoes evenly. Sprinkle with salt
and pepper. Turn heat on to medium-high and cook until the
potatoes are brown on one side (about 5 minutes).
Turn on broiler. Slice bagels and spread with margarine.
Turn potatoes, add onion and green pepper, reduce heat
to medium-low.
Melt margarine in omelet pan on high heat. Beat eggs and
milk until frothy, add cheese and pepperoni.
Reduce heat to medium, tilt pan to spread melted margarine.
Pour in eggs.
Cook over medium heat until edges become solid. Lift and
fold with a pancake turner. Continue cooking on medium heat
until firm.
Check on bread in the broiler while the eggs cook.
Serve omelet with Potatoes O'Brien and toasted bagel.