01 -
Heat 2 tablespoons olive oil in a 12-inch skillet over medium-high heat until shimmering. Add the yellow onion and both bell peppers. Sauté, stirring frequently, until translucent and lightly browned, about 7 to 8 minutes. Transfer mixture to a bowl and set aside.
02 -
Bring a large pot of water to a boil. Add baking soda and stir to dissolve. Place the diced potatoes in the boiling water and cook until just fork-tender, about 6 to 7 minutes.
03 -
Drain the potatoes in a colander and return them to the dry pot over medium heat. Stir carefully and cook for 2 minutes to remove any remaining moisture.
04 -
Heat remaining 1 tablespoon olive oil and the butter in the same skillet over medium-high heat until the butter foams. Add the potatoes in a single layer, ensuring contact with the skillet. Cook without stirring until golden brown on one side, about 4 to 5 minutes.
05 -
Carefully turn the potatoes with a thin spatula. Spread out in a single layer again and repeat the browning process, turning every 4 to 5 minutes, until tender and browned on most sides, about 12 to 15 minutes total.
06 -
Add the onion and pepper mixture, salt, black pepper, paprika, Italian seasoning, garlic powder, and red pepper flakes to the potatoes. Stir to combine and coat evenly. Top with sliced green onions and serve immediately.