Preheat your oven to 400°F and line a baking sheet with parchment paper.
Peel and dice the sweet potato into 1/2-inch cubes and slice the zucchini into 1/4-inch rounds.
Toss the sweet potato cubes with half of the olive oil, sea salt, and black pepper on the prepared baking sheet.
Roast the sweet potatoes for 15 minutes, then add the zucchini to the sheet and roast for an additional 10 minutes until tender.
While vegetables roast, season the steak on both sides with garlic powder, dried rosemary, and the remaining salt and pepper.
Heat the remaining olive oil in a heavy-bottomed skillet over medium-high heat until shimmering.
Place the steak in the hot skillet and sear for 3-4 minutes per side for medium-rare, or until it reaches your desired doneness.
Remove the steak from the pan and let it rest for 5 minutes before slicing against the grain to serve with the roasted vegetables.