Pat the chicken breast dry with a paper towel and season both sides evenly with sea salt, black pepper, garlic powder, and smoked paprika.
Heat 0.75 tbsp of olive oil in a large stainless steel or cast iron skillet over medium-high heat until shimmering.
Place the chicken in the skillet and sear for 6 to 7 minutes per side, or until the exterior is golden brown and the internal temperature reaches 165°F.
Remove the chicken from the pan and let it rest on a cutting board for 5 minutes.
In the same skillet, add the remaining 0.75 tbsp of olive oil and the cubed sweet potato.
Sauté the sweet potato for 8 to 10 minutes, stirring occasionally, until the edges are caramelized and the center is tender.
Add the broccoli florets and sliced red bell pepper to the skillet, sautéing for an additional 4 to 5 minutes until the vegetables are bright and crisp-tender.
Slice the rested chicken into strips and serve alongside the sautéed vegetables, garnished with fresh avocado slices.