Make southwest chicken - pat the chicken breasts dry with paper towel.
In a small bowl, combine the garlic powder, onion powder, smoked paprika, salt, black pepper, and Cajun.
Rub the chicken with olive oil, then coat both sides with the seasoning blend.
Grill the chicken over medium heat for 6–7 minutes per side, or until the internal temperature reaches 165°F. You can also pan-sear or bake at 400°F for 20–25 minutes.
Once cooked, let the chicken rest for 5 minutes, then slice into strips or bite-sized pieces.
Make the creamy southwest dressing - add all ingredients to a blender or food processor. Blend until completely smooth and creamy.
Taste and adjust seasoning as needed — add more honey for sweetness or lime for tang.
Make salad - add chopped romaine lettuce to a large mixing bowl or serving platter.
Layer on the black beans, corn, red bell pepper, cherry tomatoes, cooked quinoa, avocado, green onions, and jalapeño.
Top with sliced chicken and crumbled cotija cheese.
Drizzle generously with the creamy southwest dressing.
Finish with crushed tortilla chips for extra crunch and texture.
Toss gently and serve immediately.