Baked chicken with ratatouille

Name: Baked chicken with ratatouille
Ingredients: 1 small brown onion, chopped coarsely; 1 red capsicum (bell pepper), chopped coarsely; 1 small eggplant, chopped coarsely; 2 medium zucchini, chopped coarsley; 250 gram (8 ounces) cherry tomatoes; 4 clove garlic, peeled; 1/4 cup fresh oregano sprigs; 1 tablespoon red wine vinegar; 1 teaspoon caster (superfine) sugar; 1/4 cup (60ml) olive oil; 4 x 200g (6½-ounce) chicken breast fillets; 240 gram (7½ ounces) semi-soft goat's cheese, sliced thickly; 1/2 cup loosely packed fresh small basil leaves