Make the seasoning. In a small bowl, combine chili powder, cumin, smoked paprika, garlic powder, onion powder, oregano, cayenne (if using), salt, and pepper.
Set aside.
Brown the beef. Heat a large skillet over medium-high. Add the ground beef and cook, breaking it up with a spatula, until mostly browned, 5–7 minutes. Drain excess fat if needed.
Season and finish. Sprinkle the spice blend over the beef and add 1/4 cup water.
Stir and simmer until the liquid reduces and the meat is glossy and well coated, about 2–3 minutes. Squeeze half a lime over the meat and remove from heat.
Prep the salad base. In a large bowl, toss the chopped greens with a pinch of salt and a small squeeze of lime to perk them up.
Mix the dressing. Whisk Greek yogurt, lime juice, olive oil, honey, chili powder, salt, and pepper. Add a splash of water to reach a drizzle-friendly consistency.
Taste and adjust lime or salt.
Assemble the bowls. Divide greens among bowls. Top with beef, tomatoes, red onion, avocado, black beans, corn, bell pepper, and cilantro.
Add crunch and drizzle. Sprinkle with baked tortilla strips or a small handful of crushed baked chips, if using. Drizzle with dressing.
Serve with lime wedges for extra zing.