To prepare vinaigrette, pour boiling water over tea bags in a medium bowl. Steep 3 minutes; strain tea leaves or discard tea bags. Combine the tea, onions, and next 4 ingredients (onions through garlic); set aside.
To prepare salad, cut the tofu into 8 squares. Heat the olive oil in a large nonstick skillet over medium-high heat. Add 2 teaspoons tea leaves, sesame seeds, and salt; stir-fry 30 seconds or until fragrant. Arrange tofu on tea leaves mixture; sauté for 6 minutes or until golden brown, turning after 3 minutes. Place tofu on a paper towel. Combine greens, pear, and tomatoes in a large bowl. Drizzle with vinaigrette; toss well. Arrange 1 1/4 cups salad on each of 4 plates. Top each serving with 2 tofu slices.