Preheat the oven to 425°F (220°C).
Place the chopped carrots, broccoli florets, zucchini, and chopped onion on a rimmed sheet pan.
Drizzle the vegetables with 2 to 3 tablespoons of avocado oil and sprinkle with half of the sea salt; toss with your hands or tongs until evenly coated.
Lightly coat the chicken thighs with the remaining avocado oil.
Season the chicken on both sides with the ground turmeric, ground paprika, and the remaining sea salt, rubbing the spices into the meat.
Arrange the seasoned chicken thighs on top of the vegetables on the sheet pan in a single layer.
Bake for 40 to 45 minutes, stirring the vegetables once halfway through, until the vegetables are tender and the chicken is cooked through.
Remove from the oven and let rest a few minutes before serving.