1 ripe medium tomato
1 garlic clove, smashed
4 basil leaves
1 fresh thyme sprig
6 green olives, such as picholine, pitted and chopped
12 Niçoise olives, pitted and chopped
1 tablespoon drained capers
1 celery rib, peeled and diced
1/2 small fennel bulb, stalks discarded and bulb diced
1 small zucchini, diced
1 red bell pepper, diced
1 green bell pepper, diced
1 small onion, diced
About 2 cups extra-virgin olive oil, divided
1 pinch saffron, crumbled
1 lemon, peel and pith cut off and lemon quartered and diced
6 (6-oz) pieces sea bass or striped bass fillet with skin, small bones removed
1/4 teaspoon fine sea salt
Extra-virgin olive oil for drizzling
1 teaspoon chopped fresh chives
Coarse sea salt to taste