Season chicken breasts with salt, pepper, garlic powder, and paprika.
Heat olive oil in a skillet over medium-high heat. Sear chicken for 5–6 min per side until golden-brown and internal temperature reads 165 °F (74 °C). Remove and rest 5 min, then slice.
In a small bowl, whisk together dressing ingredients until emulsified.
On a large platter or bowl, combine salad greens, cherry tomatoes, cucumber, onion, and avocado (if using).
Top with sliced crispy chicken and sprinkle with crumbled cheese.
Drizzle dressing over the salad just before serving and toss gently.
Serve immediately for the crunchiest texture.