Season the chicken breast evenly with sea salt, black pepper, and dried thyme.
Heat the olive oil in a large skillet over medium-high heat until shimmering.
Place the chicken in the skillet and sear for 5-6 minutes per side until golden brown and cooked through, then remove and set aside on a plate.
Lower the heat to medium and add the minced garlic to the same skillet, sautéing for 30 seconds until fragrant.
Pour in the chicken broth and lemon juice, using a wooden spoon to scrape the bottom of the pan to release the flavorful browned bits.
Stir in the coconut milk and let the sauce simmer gently for 2-3 minutes until it begins to slightly thicken.
Add the baby spinach to the skillet and stir until the leaves are just wilted.
Return the chicken to the skillet, spooning the creamy sauce over the top, and garnish with fresh chopped parsley before serving.