Marinate the Chicken:
In a mixing bowl, whisk together balsamic vinegar, olive oil, honey, garlic, thyme, salt, and pepper. Add the chicken breasts and coat them evenly. Cover and refrigerate for at least 30 minutes or up to 2 hours.
Grill the Chicken:
Preheat your grill or grill pan over medium-high heat. Remove the chicken from the marinade and grill for 6–8 minutes per side, or until the internal temperature reaches 165°F (75°C). Remove the chicken from the grill and let it rest for 5 minutes before slicing.
Prepare the Dressing:
In a small bowl, whisk together balsamic vinegar, olive oil, Dijon mustard, honey, salt, and pepper until smooth and emulsified.
Assemble the Salad:
In a large salad bowl, arrange the mixed greens. Top with sliced strawberries, red onion, goat cheese, and toasted pecans. Add the sliced grilled chicken on top.
Drizzle & Serve:
Drizzle the balsamic dressing over the salad just before serving. Toss gently to combine, or serve with the dressing on the side for individual customization.