01 - Heat olive oil in a large skillet over medium heat.
02 - Add garlic and sauté for 30 seconds until fragrant, but not browned.
03 - Add kale and Swiss chard, season with salt and pepper, and cook for 3-4 minutes, stirring frequently.
04 - Add spinach and cook for another 2 minutes until all greens are wilted and vibrant.
05 - Stir in lemon zest, juice, and red pepper flakes, adjusting seasoning as needed.
06 - Serve immediately, garnished with extra lemon zest if desired.