Time-Is-Precious Steak

Ingredients

• 1 (12-ounce) top round beef steak, thinly sliced
• kosher salt, to taste
• freshly ground black pepper, to taste
• 2 tablespoons peanut oil or neutral-flavored oil, divided
• 1 tablespoon soy sauce
• 1 tablespoon rice wine vinegar
• 1 1/2 teaspoons crushed red pepper flakes
• 1 red bell pepper, thinly sliced
• 1 yellow bell pepper, thinly sliced
• 1 green bell pepper, thinly sliced
• 1 orange bell pepper, thinly sliced
• 3 cloves garlic, minced
• white rice, to taste, cooked and hot
• 1 bunch scallions, thinly sliced
• sesame seeds, to taste