Whisk together crème fraîche, vinegar, oil, chives, and honey; season with salt and pepper.
To poach the eggs, bring a large pot of water to a boil. Meanwhile, crack eggs into a colander, let drain 30 seconds, then gently transfer to a 4-cup liquid measuring cup.Stir vinegar and salt into boiling water. Remove from heat, then gently lower liquid measuring cup to just above the water and carefully drop eggs into water one at a time, rotating 90-degrees after each addition. Cover pot and let eggs cook 3 minutes until whites are set. If they are not set after 3 minutes, return lid to pot and cook 30 seconds more. Gently remove each egg with a slotted spoon, allowing water to drain off then transfer to a plate.
Divide Swiss chard among two bowls, then divide and arrange tomatoes, avocado, peach, and corn in each bowl. Top each salad with 1 or 2 eggs, and season with salt and cracked black pepper. Garnish with fresh chopped chives, basil, and microgreens. Drizzle salads with dressing and serve with toasted baguette.