Season the steak lightly with salt and black pepper. Heat a grill pan or skillet over medium-high heat and cook the steak for about 3–4 minutes per side, depending on thickness and preferred doneness. Once cooked, allow the steak to rest for several minutes before slicing it thinly against the grain.
Prepare the chipotle lime dressing by whisking together olive oil, lime juice, Greek yogurt, chipotle chili powder, cumin, salt, and black pepper in a small bowl. Continue mixing until the dressing becomes smooth and creamy.
In two serving bowls, arrange the chopped romaine lettuce as the base. Evenly distribute the black beans, corn, sliced avocado, and tomatoes over the lettuce to create a colorful salad foundation.
Top each bowl with the sliced grilled steak. Drizzle the chipotle lime dressing over the salad and toss lightly if desired. Serve immediately for the best flavor and texture.