Pork Chops with Fresh Tomato, Onion, Garlic, and Feta

INGREDIENTS

• 2 tablespoons olive oil, divided
• 1 large onion, halved and thinly sliced
• 4 pork loin chops, 1 inch thick
• salt to taste
• black pepper to taste
• garlic powder to taste
• 1/2 pint red grape tomatoes, halved
• 1/2 pint yellow grape tomatoes, halved
• 3 cloves garlic, diced
• 1 tablespoon dried basil
• 2 1/2 teaspoons balsamic vinegar
• 4 ounces feta cheese, crumbled