Preheat your oven to 400°F (200°C).
Trim the woody ends off the asparagus and place the spears on a parchment-lined baking sheet.
Drizzle the asparagus with 0.5 tbsp of olive oil and a pinch of sea salt, then toss to coat evenly.
Roast the asparagus in the oven for 12-15 minutes until they are tender and slightly browned.
While the asparagus roasts, season the chicken breast on both sides with the remaining sea salt, black pepper, and dried oregano.
Heat the remaining 0.5 tbsp of olive oil in a large skillet over medium-high heat.
Add the chicken to the skillet and sear for 5-7 minutes per side, or until the internal temperature reaches 165°F.
Remove the chicken from the pan and set aside; reduce the heat to medium.
Add the minced garlic to the same pan and sauté for 30 seconds until fragrant.
Pour in the coconut milk, lemon juice, and lemon zest, whisking to scrape up any browned bits from the bottom of the pan.
Simmer the sauce for 2-3 minutes until it thickens slightly, then return the chicken to the pan to coat it in the sauce.
Plate the chicken alongside the roasted asparagus and garnish everything with freshly chopped parsley.