Step 1: Marinate the Chicken

1. In a bowl, whisk together olive oil, Dijon mustard, honey, thyme, garlic powder, salt, and pepper.
2. Place chicken breasts in a shallow dish or zip-top bag and pour the marinade over them.
3. Turn to coat evenly, then cover and refrigerate for at least 30 minutes (or up to 4 hours for deeper flavor).

Step 2: Prepare the Honey Mustard Dressing

1. In a medium bowl, whisk together Dijon mustard and honey until well combined.
2. Slowly drizzle in olive oil while continuously whisking to emulsify.
3. Add apple cider vinegar, minced garlic, salt, pepper, and optional lemon juice.
4. Whisk until smooth and creamy. Taste and adjust seasonings if needed.
5. Refrigerate until ready to use.

Step 3: Cook the Chicken

1. Preheat grill or skillet to medium-high heat.
2. Remove chicken from marinade, letting excess drip off.
3. For grilling: Grill chicken for 5-7 minutes per side until internal temperature reaches 165°F (74°C).
4. For stovetop: Heat 1 tablespoon oil in a skillet. Cook chicken for 6-8 minutes per side until cooked through.
5. Let chicken rest for 5 minutes before slicing to retain juices.
6. Slice into thin strips against the grain.

Step 4: Assemble the Salad

1. In a large bowl, add mixed greens as the base.
2. Arrange cherry tomatoes, cucumber, red onion, avocado, and shredded carrots on top.
3. Add sliced honey mustard chicken across the salad.
4. Sprinkle with toasted nuts, dried cranberries, and optional cheese.

Step 5: Serve and Enjoy

1. Drizzle the homemade honey mustard dressing over the salad.
2. Toss gently to coat or serve with dressing on the side.
3. Serve immediately and enjoy your delicious honey mustard chicken salad!