Cube up the spam into smallish cubes
dice up some onion (white, yellow or sweet)
with some sesame oil or bacon fat fry the spam and onions in large skillet (I use cast iron) or wok on medium heat until crispy and onions are soft, remove from pan and set aside
I like to use canned peas to save time, carrots and broccoli are also good, use whatever you like, cook them first by steaming or one of those frozen microwave bags. I usually just stick with peas to keep it simple
crack 1-2 eggs depending on portions and preference into the pan
destroy the yolk a spread with the bottom of your spatula then with the edge of the spatula "slice" the egg into thin strips, just move the spatula side to side before the egg really starts to cook. You aren't scrambling them, but you don't want just a fried egg either, if you do it right you should have strips of egg that have distinct white and yellow sections
Once the egg strips firm up a bit (just enough that the veggies don't mix in, you want the egg to stay separate) add veggies and return spam and onion back to pan, stir to combine
add day old cooked rice (day old is important) and a small amount of soy sauce
toss to combine and heat through, add pepper
I don't have specific amounts, it's really just a guideline I follow but it's delicious and it gets requested at home often
and it's cheap