Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Peel and slice the carrots into even 2-inch sticks, then toss them on the baking sheet with 0.25 tbsp of olive oil, the cinnamon, and 0.125 tsp of sea salt.
Roast the carrots for 20 minutes, turning halfway through, until they are tender and starting to develop caramelized edges.
While the carrots roast, season the chicken breast with the remaining 0.125 tsp of sea salt and the black pepper.
Heat the remaining 0.25 tbsp of olive oil in a skillet over medium-high heat and sear the chicken for 6-7 minutes per side until fully cooked through.
Remove the carrots from the oven, drizzle with the maple syrup, and sprinkle the chopped pecans evenly over the top.
Return the carrots to the oven for an additional 5 minutes until the glaze is bubbling and the pecans are fragrant and toasted.
Slice the chicken breast and serve it alongside the warm glazed carrots, garnishing the entire plate with fresh thyme leaves.