Creating Mediterranean Grilled Chicken with Classic Greek Salad involves following several straightforward steps:

For the Grilled Chicken:

1. Prepare the Marinade: In a bowl, whisk together olive oil, lemon juice, garlic, oregano, salt, and pepper.
2. Marinate the Chicken: Place the chicken breasts in a resealable bag or a shallow dish and pour the marinade over them. Seal and refrigerate for at least 30 minutes, or up to 2 hours for more intense flavor.
3. Preheat the Grill: Preheat your grill to medium-high heat.
4. Grill the Chicken: Remove the chicken from the marinade, discarding any excess marinade. Grill the chicken for 6-7 minutes on each side or until fully cooked and the juices run clear.
5. Let it Rest: Once done, take the chicken off the grill and let it rest for 5-10 minutes before slicing.

For the Greek Salad:

6. Chop Vegetables: While the chicken is grilling, prepare the salad by chopping the tomatoes, cucumber, red onion, and parsley, and placing them in a large salad bowl.
7. Add Olives and Feta: Gently fold in the Kalamata olives and crumbled feta cheese.
8. Prepare the Dressing: In a small bowl, whisk together olive oil, red wine vinegar, oregano, salt, and pepper until well combined.
9. Dress the Salad: Drizzle the dressing over the salad and toss gently to combine.

Final Assembly:

10. Slice the Chicken: After resting, slice the grilled chicken into strips.
11. Combine and Serve: Serve the sliced chicken over the Greek salad, or beside it for a more elegant presentation.