Cauliflower Chicken Nachos

Name: Cauliflower Chicken Nachos
Ingredients: 3 tablespoons grapeseed oil or avocado oil; ¾ teaspoon chili powder; ¾ teaspoon ground cumin; ¾ teaspoon onion powder; ¼ teaspoon salt, divided; 8 cups large cauliflower florets, cut into 1/2-inch-thick slices; 1 cup chopped tomato; 1 avocado, diced; ¼ cup chopped fresh cilantro; 2 tablespoons pickled jalapeño peppers or fresh jalapeño pepper slices; 2 tablespoons finely chopped red onion; ¾ cup canned reduced-sodium refried black beans; 2 cups shredded cooked chicken; ¾ cup shredded Mexican cheese blend; ¾ cup finely shredded cabbage