Combine all vinaigrette ingredients in a mason jar and shake well. If you do not have a lidded jar just combine all ingredients in a bowl and whisk until combined.
In a large skillet heat oil over medium-high heat. Add pancetta and cook until crispy- about 4-5 minutes. Remove to a paper towel lined plate.
Add the chicken to the pancetta oil and cook 5-6 minutes per side or until cooked through. Remove to serving platter.
The skillet add the vinaigrette and cook until warmed through-about 1-2 minutes.
Sprinkle pancetta, blue cheese, arugula, pears and cranberries over chicken. Drizzle warmed vinaigrette over everything. Serve immediately.