6 ounces feta cheese, cut into 1/2-inch cubes
2 teaspoons fresh oregano, chopped
1/2 teaspoon fresh thyme, chopped
1 1/2 tablespoons plus 2 teaspoons extra virgin olive oil, divided
3 pound watermelon, rind removed, cut into 1-inch cubes
4 cups baby arugula
1 1/2 tablespoons fresh lemon juice
1 tablespoon raspberry red wine vinegar
1 teaspoon salt