Gon Lo Mein Noodles (Haole Style)

1-1/2 lbs. pork butt or boneless chicken thighs 1 c. achiote oil 1/2 c. chopped onion 2 cloves garlic, minced 3 green onions, finely chopped 1/2 c. Chinese parsley, chopped 1 (7-oz.) jar chopped pimiento 1 tsp. dried oregano leaves 1 (8-oz.) can tomato sauce 1 (8-oz.) can pitted olives, drained 2-1/2 tsp. salt 4…