How to Make It
Combine first 5 ingredients in a large bowl, stirring with a whisk. Let stand 10 minutes. Set aside half of shallot mixture. Add chard to bowl; toss to coat. Place chard mixture on a serving platter. Return reserved half of shallot mixture to bowl. Add chickpeas; toss to coat. Top chard mixture with chickpea mixture. Sprinkle evenly with walnuts and remaining ingredients.