Cheesy Cauliflower Nachos

Name: Cheesy Cauliflower Nachos
Cuisine: American, Mexican, Latin American
Ingredients: 1 large cauliflower head, cut into 1 inch thick slices; avocado oil, or olive oil; sea salt and freshly ground black pepper; 1/2 tsp onion powder; 1/2 tsp garlic powder; 1 cup black beans, drained and rinsed; 1/2 cup organic corn, fresh or frozen; 1 cup chopped grape or cherry tomatoes; 1/4 cup diced red onion; 1 jalapeño, seeded and sliced; 1 cup shredded Mexican cheddar cheese; plain Greek yogurt for serving; 1/4 cup chopped fresh cilantro for serving