In a large bowl, mix the chicken with 2 tablespoons of olive oil, garlic, dried herbs, salt, and pepper. Let it marinate for 30 minutes.
Whisk the remaining olive oil with the lemon juice. Preheat the grill to the highest setting.
Thread the chicken, eggplant, onion, and bell peppers onto 8 wooden skewers, placing a piece of lemon at the end of each. For an enhanced taste, season with salt and pepper, then brush them with the oil and lemon mixture.
Grill for about 9 minutes, or until the chicken is fully cooked.