Heat some cooking fat in a large skillet over medium heat, add the minced garlic and cook until soft, 2 to 3 minutes.
Cooking fat, 3 garlic cloves
Add the tomatoes, onion, and eggplant; cook for an additional 4 to 5 minutes.
1 yellow onion, 5 ripe tomatoes, 1 eggplant
Pour in the tomato sauce and fresh parsley; season to taste and give everything a good stir.
2 cups tomato sauce, ¼ cup fresh parsley leaves
Bring the sauce to a boil, lower the heat, add basil, and let simmer for 15 to 20 minutes.
4 tbsp. fresh basil
Preheat a grill to medium-high.
Season the chicken breasts to taste with salt, pepper, and oregano.
4 chicken breasts, 1 tbsp. dried oregano, Sea salt and freshly ground black pepper
Grill the chicken breasts on both sides, 4 to 5 minutes each, depending on thickness until cooked through.
Serve the grilled chicken with tomato-eggplant sauce.