Preparation Whisk vinegar and mustard in small bowl. Gradually whisk in oil; season dressing with salt and pepper. Place chicken in large bowl. Warm drippings in microwave just until melted. Drizzle over chicken; toss to coat. Add green onions, 1/3 cup almonds, and peppers and toss. DO AHEAD Can be made 2 hours ahead. Cover and chill. Let dressing stand at room temperature. Add greens, basil, and dressing to bowl with chicken; toss to coat. Season chicken salad to taste with salt and pepper. Sprinkle remaining 3 tablespoons toasted almonds over and serve.
Preparation Whisk vinegar and mustard in small bowl. Gradually whisk in oil; season dressing with salt and pepper. Place chicken in large bowl. Warm drippings in microwave just until melted. Drizzle over chicken; toss to coat. Add green onions, 1/3 cup almonds, and peppers and toss. DO AHEAD Can be made 2 hours ahead. Cover and chill. Let dressing stand at room temperature. Add greens, basil, and dressing to bowl with chicken; toss to coat. Season chicken salad to taste with salt and pepper. Sprinkle remaining 3 tablespoons toasted almonds over and serve.