In a small skillet, heat pecans over medium heat. Cook 2 minutes, stirring frequently. Drizzle with honey. Cook 5 minutes longer, stirring frequently. Remove from heat and stir in vanilla and salt. Pour pecans onto a parchment-lined countertop to cool. Cool completely before using.
Chicken
Preheat grill to medium heat. Season chicken with salt and pepper. Grill over medium heat 8-10 minutes per side, or until juices run clear and chicken is no longer pink. Let rest 5 minutes. Slice into thin slices.
Salad
Arrange spinach evenly among 4 salad bowls. Top with strawberries. Fan chicken over spinach. Drizzle with dressing. Sprinkle with pecans.
Dressing
Combine all ingredients in a shaker cup or small bowl. Shake or whisk to combine.
Notes
For vegan or vegetarian, omit chicken and use agave in place of the honey.