Preheat oven to 400°F and line a rimmed baking sheet with parchment paper or a Silpat® baking mat. Set aside.
Heat a large skillet over medium heat. Add the garlic and ground beef and season with ground cumin, smoked paprika, chili powder, one teaspoon chipotle powder, and onion powder. Season with salt and black pepper, to taste, and stir to combine.
Cook, stirring occasionally, until the meat is browned, approximately 8-10 minutes. Break up the beef with a spatula into small chunks while it cooks.
While the beef is browning, arrange the tortilla strips on the prepared baking sheet and brush lightly with one tablespoon olive oil. Place in the oven until slightly crispy, approximately 6-8 minutes.
Stir the black beans into the skillet with the beef until thoroughly coated with the seasonings. Remove from heat and carefully drain excess fat from skillet and set aside.
Combine the lettuce, avocado, tomatoes, red onion, and corn in a large salad bowl. Sprinkle with remaining olive oil, chipotle powder, and fresh lime juice. Generously season with salt and black pepper, to taste, and toss to combine.
To serve, transfer salad to a decorative serving platter and top with the seasoned beef and black beans, Mexican cheese, and crispy tortilla strips, if desired. Enjoy!