Start by bringing your steak to room temperature. Pat it dry with paper towels and rub with olive oil, salt, black pepper, garlic powder, and smoked paprika. Let it sit while you prepare the grill.
Preheat your grill or grill pan to high heat (around 450°F).
Slice zucchinis and toss with olive oil and a pinch of salt.
Grill zucchini slices for about 2–3 minutes per side until tender and marked.
Grill the steak for about 4–5 minutes per side for medium-rare. Let it rest for 5–10 minutes after grilling.
Cook quinoa or chosen grain according to package instructions.
In a mixing bowl, combine sour cream or Greek yogurt with Dijon mustard, garlic powder, smoked paprika, salt, and chopped parsley or chives. Add lemon juice if desired.