Salt and Pepper Squid with Caramelized Onions and Bell Peppers

Name: Salt and Pepper Squid with Caramelized Onions and Bell Peppers
Ingredients: 2 tablespoons kosher salt; 1 teaspoon Szechwan peppercorns; 1 tablespoon ground black pepper; 1 tablespoon ground white pepper; 1 pound cleaned squid, tentacles separated, tubes cut lengthwise in half; 1 cup self-rising flour; 1/2 teaspoon baking powder; 1 tablespoon peanut oil plus peanut oil, for frying; 1 large onion, sliced; 1 red bell pepper, de-seeded and julienned; 1 yellow bell pepper, de-seeded and julienned; 2 Thai bird chiles or 1 jalepeno, de-stemmed and sliced