01 - In a small bowl, whisk together the olive oil, lemon juice, minced garlic, dried oregano, 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 breast to coat evenly. Allow to marinate at room temperature for at least 15 minutes, or refrigerate for up to 2 hours for more pronounced flavor.
03 - Preheat an outdoor grill or grill pan to medium-high heat, approximately 400°F. Lightly oil the grates to prevent sticking.
04 - Toss the trimmed asparagus with a drizzle of olive oil, a pinch of salt, and a few grinds of black pepper. Set aside.
05 - Remove the chicken from the marinade, letting excess drip off. Grill the breasts 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 - Place the asparagus directly on the grill grates. Cook for 2 to 3 minutes, turning occasionally, until lightly charred and crisp-tender. Remove and set aside.
07 - While the chicken rests, combine the Calabrian chili paste, olive oil, white wine vinegar, honey, minced shallot, chopped parsley, lemon zest, and a pinch of salt in a small bowl. Stir thoroughly and adjust seasoning to taste.
08 - Arrange the grilled chicken breasts and charred asparagus on plates. Drizzle generously with the Calabrian chili sauce and serve immediately.