1. Preheat oven to 350°F. Coat two large, shallow baking sheets with nonstick cooking spray.
2. In a large bowl, mix together hash browns, chicken, 6 Tbsp. of pesto sauce, red pepper, cheese and salt. Season with black pepper if desired. Shape into 18 patties, about 1/3 cup each, and place on baking sheets.
3. Bake uncovered for 10 to 15 minutes, or until internal temperature reaches 165°F. In a small bowl, mix together sour cream and remaining 1/4 cup of pesto sauce. Serve warm patties with dollop of pesto sour cream sauce.