Preheat oven to 400°. Toast the nuts in the oven 2-3 minutes or until fragrant. Transfer the nuts to a bowl, and toss with 1/4 teaspoon garam masala and the salt.
Halve and core the pears. Cut each half into 3 wedges. Lightly coat a nonstick baking sheet with cooking spray; arrange pear wedges on their sides on prepared pan, and sprinkle tops with remaining 1/4 teaspoon garam masala. Roast pears in the middle of the oven, turning once, about 20 minutes or until tender and golden brown.
Whisk together the vinegar and the next 3 ingredients (through olive oil) in a small bowl.
Arrange greens and pears on each of 4 plates. Sprinkle the cheese and nuts over top, and drizzle with dressing. Serve with a flatbread cracker.