Shred 1 bunch of Swiss chard. Heat a large frying pan over medium-high. When hot, add 1 tbsp olive oil. Add chard, 1/4 cup chopped Brazil nuts and 1/8 tsp salt. Cook, stirring frequently, until chard is wilted, 3 to 5 min. Remove from heat and stir in 1 tsp orange zest. Drizzle with 1 tbsp extra-virgin olive oil.