Preheat your oven to 425°F (220°C). Line a large sheet pan with parchment paper or a silicone liner for easy cleanup.
Wash and dry the sweet potatoes. Cut them into roughly 1-inch cubes so they cook evenly and caramelize nicely on the pan.
Pat the chicken thighs dry with paper towels. Season generously with salt, pepper, paprika, and dried thyme or rosemary.
In a small bowl, whisk together honey, minced garlic, soy sauce, lemon juice, rice vinegar, and a splash of olive oil. This will be your glossy glaze.
Toss the sweet potato cubes with a tablespoon of olive oil and a pinch of salt and pepper. Spread them in a single layer on one side of the sheet pan.
Place the seasoned chicken thighs on the other side of the sheet pan, skin-side up if they have skin. Drizzle or brush a portion of the honey-garlic glaze over the chicken.
Roast for 20 minutes, then turn the potatoes and brush the remaining glaze over both potatoes and chicken. Continue roasting for another 15–20 minutes, until the chicken reaches 165°F (74°C) and the potatoes are tender and caramelized.
If you’d like an extra glaze sheen, switch the oven to broil for 1–2 minutes at the end. Watch closely to prevent burning.
Remove from the oven and let the pan rest for 5 minutes. Spoon any remaining juices over the chicken and potatoes before serving.