Preparation Stir together 2 tablespoons oil, garlic, oregano, and 1/4 teaspoon each of salt and pepper. Heat grill pan over medium heat until hot. Brush 1 side of each bread slice with some of garlic oil and put, oiled side down, on a work surface. Brush chicken with remaining garlic oil, then grill chicken, turning once, until just cooked through, 2 to 3 minutes total. Put chicken on a bread slice, then top with cherry peppers, mozzarella, and remaining bread slice, oiled side up. Put sandwich in grill pan and weight with a heavy skillet. Cook, turning once, until cheese has melted and bread is golden, about 4 minutes total. Meanwhile, toss tomatoes with basil, remaining tablespoon oil, vinegar, and salt to taste. Serve panino with salad.
Preparation Stir together 2 tablespoons oil, garlic, oregano, and 1/4 teaspoon each of salt and pepper. Heat grill pan over medium heat until hot. Brush 1 side of each bread slice with some of garlic oil and put, oiled side down, on a work surface. Brush chicken with remaining garlic oil, then grill chicken, turning once, until just cooked through, 2 to 3 minutes total. Put chicken on a bread slice, then top with cherry peppers, mozzarella, and remaining bread slice, oiled side up. Put sandwich in grill pan and weight with a heavy skillet. Cook, turning once, until cheese has melted and bread is golden, about 4 minutes total. Meanwhile, toss tomatoes with basil, remaining tablespoon oil, vinegar, and salt to taste. Serve panino with salad.