01 - Preheat an outdoor grill or grill pan to medium-high heat.
02 - Pat the chicken breasts dry with paper towels. Rub both the chicken and asparagus evenly with olive oil, kosher salt, and black pepper.
03 - Place the chicken breasts on the grill and cook for 6 to 7 minutes per side, until the internal temperature reaches 165°F.
04 - Add the asparagus to the grill during the last 4 to 5 minutes of cooking. Turn occasionally until crisp-tender with visible grill marks.
05 - While the chicken grills, combine the chopped Calabrian chili peppers, olive oil, minced garlic, lemon juice, honey, and parsley in a small bowl. Season with salt and pepper to taste and stir until well blended.
06 - Remove the chicken from the grill and let it rest for 2 to 3 minutes before slicing.
07 - Arrange the sliced chicken and grilled asparagus on plates. Drizzle generously with the Calabrian chili sauce. Finish with lemon zest and additional chopped parsley.