Combine soy sauce, garlic powder, olive oil, and hot sauce in a shallow plate to make the marinade. Add the steak strips into the marinade and allow to marinate in the refrigerator for 30 minutes to one hour. Arrange zucchini slices in a shallow plate and sprinkle with salt, pepper, and fresh oregano, and drizzle with lemon juice and olive oil. Toss to combine and marinate along with the steak slices.
Preheat your oven to 520º F (270) on grill or broiler mode. Line a baking sheet with parchment paper.
Spread drained marinated steak strips and zucchini slices on the prepared baking sheet and season with salt and pepper. Bake in the oven for about 5-10 minutes, until zucchini is crisp-tender and steak is cooked through.
Cook the remaining marinade in a small saucepan, to drizzle over after cooking.
Remove steak and zucchini from the oven and drizzle with cooked marinade over top and sprinkle with fresh chopped parsley and red chili pepper flakes. Serve the sheet pan steak and lemon zucchini immediately.
