Place chicken in baking dish.
In medium bowl, mix together butter, lemon juice, pepper, garlic powder, oregano and Greek seasoning; pour over chicken. Place chicken in 350°F. oven and bake for about 50 minutes, uncovered, basting occasionally.
Place salad greens in large serving bowl. Top with Tomato-Cucumber Salsa. Slice chicken in thin strips and arrange on top of salad. Sprinkle with feta cheese and garnish with olives and pepper.