Tuna With Provençal Vegetables

Name: Tuna With Provençal Vegetables
Ingredients: 1/2 cup extra-virgin olive oil; 1 pound zucchini, halved lengthwise and thinly sliced; 1 red bell pepper, cut into thin strips; 1/2 small red onion, thinly sliced; 4 thyme sprigs; 4 garlic cloves—2 thinly sliced, 2 halved; Salt and freshly ground pepper; 1 tomato, coarsely chopped; 1 small fennel bulb—halved, cored and sliced paper-thin; 1/4 cup pitted kalamata olives, coarsely chopped; 1 tablespoon drained capers; Four 5-ounce tuna steaks, cut 1 inch thick