Preheat your oven to 400°F (200°C). Slice the sweet potato into 1/2-inch thick rounds.
Toss the sweet potato rounds with half of the olive oil and a pinch of sea salt and pepper. Arrange in a single layer on a parchment-lined baking sheet and roast for 20-25 minutes until tender and slightly caramelized.
While the potatoes roast, season the chicken breast on both sides with the remaining sea salt, black pepper, and dried thyme.
Heat the remaining olive oil in a stainless steel or cast iron skillet over medium-high heat. Sear the chicken for 5-7 minutes per side, or until the internal temperature reaches 165°F. Remove the chicken from the pan and let it rest on a plate.
In the same skillet, reduce heat to medium and add the minced garlic. Sauté for 30-60 seconds until fragrant, being careful not to burn it.
Pour in the chicken bone broth to deglaze the pan, using a wooden spoon to scrape up any flavorful browned bits from the bottom.
Whisk in the full-fat coconut milk and bring to a gentle simmer. Let the sauce bubble for 2-3 minutes until it thickens slightly.
Add the baby spinach to the sauce and stir until just wilted, about 1 minute.
Plate the roasted sweet potato rounds, top with the seared chicken breast, and generously spoon the garlic cream sauce over the top.