Preheat oven to 350 degrees. Spread pecans in a single layer on baking sheet. Toast for 5-7 minutes until fragrant and golden. Set aside.
Add spinach to large serving bowl. For a pretty presentation, add chicken slices to center and surround with mounds of blueberries, watermelon and raspberries. Sprinkle on cheese and chopped pecans. Serve with raspberry vinaigrette.