Pat chicken dry and season both sides with salt, pepper, garlic powder, and paprika.
Heat olive oil in a skillet over medium heat. Cook chicken for 5–6 minutes per side until internal temperature reaches 165°F (75°C). Rest 5–10 minutes before slicing.
In a blender, combine strawberries, balsamic vinegar, honey, Dijon mustard, olive oil, and salt. Blend until smooth and creamy. Adjust sweetness if needed.
In a large bowl, combine lettuce, sliced strawberries, red onion, cheese, and nuts. Top with sliced chicken.
Drizzle with strawberry balsamic dressing just before serving and toss gently to combine.