Step 1: In a bowl, mix olive oil, lemon juice, garlic, oregano, paprika, cumin, salt, and pepper.
Step 2: Add chicken and coat well. Marinate for at least 15 minutes.
Step 3: Heat a skillet or grill pan over medium-high heat.
Step 4: Cook chicken for 6–7 minutes per side until cooked through.
Step 5: Remove chicken from heat and let rest for 5 minutes.
Step 6: Slice chicken into strips.
Step 7: In a large bowl, combine greens, tomatoes, cucumber, olives, onion, and feta.
Step 8: Whisk dressing ingredients and drizzle over salad.
Step 9: Top salad with sliced chicken and toss lightly before serving.