Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Pat the chicken breast completely dry with paper towels and season both sides evenly with the sea salt, black pepper, rosemary, and thyme.
Trim the tough, woody ends off the asparagus spears and slice the carrots into thin, uniform rounds to ensure even cooking.
Place the seasoned chicken breast, asparagus, and carrots onto the prepared baking sheet in a single layer.
In a small bowl, whisk together the minced garlic, olive oil, and lemon juice until well combined.
Drizzle the garlic-lemon oil over the chicken and vegetables, using your hands or tongs to toss the vegetables until they are lightly coated.
Roast in the center of the oven for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F.
During the final 3 minutes of roasting, scatter the green peas over the vegetable mixture to warm them through without losing their bright color.
Remove from the oven and let the chicken rest for 5 minutes before slicing to keep it juicy and tender.