Toss 2 large trimmed bunches broccolini with 2 tablespoons olive oil and a pinch each of salt and pepper on a baking sheet. Spread in a single layer and roast at 475˚ F until charred around the edges, 8 to 10 minutes. Whisk 1 1/2 teaspoons soy sauce, 1 tablespoon agave syrup and 1 teaspoon chili-garlic sauce. Drizzle on the broccolini.