Step 1

Preheat oven to 400 degrees F. Coat a large rimmed baking sheet with cooking spray.

Step 2

Cook walnuts in a medium skillet over medium heat, stirring frequently, until golden and fragrant. Set aside.

Step 3

Whisk vinegar, oil, lemon juice, honey, mustard, rosemary, garlic, and 1/4 teaspoon each salt and pepper in a large bowl. Place pork on the prepared baking sheet. Brush with 1 tablespoon of the dressing and sprinkle with the remaining 1/4 teaspoon each salt and pepper.

Step 4

Roast the pork until a thermometer registers 145 degrees F, 20 to 22 minutes. Transfer to a clean cutting board and let stand for 5 minutes. Cut into slices about 3/4 inch thick.

Step 5

Add arugula and pears to the dressing in the large bowl and toss to coat. Divide the salad among 4 serving plates. Top with pork, cheese, and the reserved walnuts.