Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Peel and cube the sweet potato into 1-inch chunks and trim the Brussels sprouts before slicing them in half.
Place the vegetables on the baking sheet and toss thoroughly with avocado oil, sea salt, black pepper, garlic powder, and smoked paprika.
Spread the vegetables in a single layer and roast for 20 to 25 minutes until the sweet potatoes are tender and the sprouts have crispy, golden-brown edges.
While the vegetables are roasting, season the chicken breast and shrimp with a light pinch of salt and pepper.
Heat a cast-iron skillet over medium-high heat and cook the chicken for 5 to 7 minutes per side until the internal temperature reaches 165°F.
Remove the chicken to rest, then in the same skillet, sear the shrimp for approximately 2 minutes per side until they are pink and opaque.
Slice the chicken breast into strips and serve alongside the shrimp and the roasted vegetable medley for a complete, clean-eating meal.