Chicken Breasts With Eggplant And Roasted Red Pepper Sauce

• 4 chicken breasts (skinless boneless halves)
• 2 bell peppers (red)
• 2 eggplant
• 1 garlic clove (chopped)
• 1 herbs as noted (fresh)
• 60 ml wine vinegar (red)
• 30 ml olive oil
• 16 gr herbs (finely chopped fresh)
• 1 slice onion (sliced)