Step 1: Prepare the Ingredients - Wash and peel the Yukon Gold potatoes. Dice them into small, uniform pieces, approximately 1/2 inch thick. Dice the yellow onion, red bell pepper, and green bell pepper into similar-sized pieces.
Step 2: Heat the Oil - In a large skillet, heat the olive oil over medium heat until hot but not smoking.
Step 3: Cook the Potatoes - Add the diced potatoes to the hot skillet. Spread them out evenly and let them cook undisturbed for about 5-7 minutes to develop a golden-brown crust.
Step 4: Add Vegetables - Stir in the diced onion, red bell pepper, and green bell pepper. Season with salt, black pepper, onion powder, and garlic powder. Cook, stirring occasionally, for another 10-15 minutes until the potatoes are tender and the vegetables are soft.
Step 5: Garnish and Serve - Remove from heat, transfer to a serving dish, and garnish with freshly chopped parsley. Serve hot.