Preheat your oven to 400°F and line a baking sheet with parchment paper.
Peel and dice the sweet potato into half-inch cubes, then toss them on the baking sheet with 0.5 tbsp of olive oil and a pinch of sea salt.
Roast the sweet potatoes for 22-25 minutes, tossing halfway through, until they are tender and the edges are slightly caramelized.
Season the chicken breast on both sides with the remaining sea salt and black pepper.
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 6-7 minutes per side until the exterior is golden-brown and the internal temperature reaches 165°F.
While the chicken cooks, steam the broccoli florets for 4-5 minutes until they are bright green and fork-tender.
Remove the chicken from the pan to rest; lower the heat to medium and add the ghee and minced garlic to the skillet, scraping up the browned bits.
Stir in the lemon juice, lemon zest, and chopped parsley, simmering for 1 minute to create a fragrant, vibrant sauce.
Plate the chicken alongside the roasted sweet potatoes and steamed broccoli, then spoon the warm lemon-herb sauce over the chicken breast.