01 - In a small bowl, whisk together the olive oil, lemon juice, minced garlic, dried oregano, and a generous pinch of salt and black pepper until well combined.
02 - Place the chicken breasts in a shallow dish or a resealable plastic bag. Pour the marinade over the chicken, turning each piece to coat evenly. Let rest for at least 15 minutes at room temperature, or refrigerate for up to 2 hours for deeper flavor penetration.
03 - Heat an outdoor grill or grill pan to medium-high, approximately 400°F. Lightly oil the grates to prevent sticking.
04 - Toss the trimmed asparagus with a light drizzle of olive oil and season with salt and pepper. Set aside near the grill.
05 - Remove the chicken from the marinade, allowing excess to drip off. Place on the hot grill and cook for 5 to 6 minutes per side until golden grill marks form and the internal temperature reaches 165°F. Transfer to a plate and rest for 5 minutes before serving.
06 - While the chicken rests, lay the asparagus across the grill grates perpendicular to the bars. Cook for 2 to 3 minutes, turning occasionally, until lightly charred and crisp-tender.
07 - In a small bowl, stir together the Calabrian chili paste, olive oil, white wine vinegar, honey, minced shallot, chopped parsley, and lemon zest. Season with salt to taste and adjust the heat level as desired.
08 - Arrange the grilled chicken and asparagus on serving plates. Drizzle the Calabrian chili sauce generously over the top and serve immediately.