Preheat the oven to 450F or 425F convection. Line a baking sheet with parchment paper.
In a small bowl, mix together the spices. Add sweet potatoes to the baking sheet and toss with 2 tablespoons olive oil, 2 teaspoons spice mix, and ½ teaspoon salt. Bake for 15-20 minutes or until cooked through and starting to caramelize.
Use a spatula to make spaces on the baking sheet for the fish. Add fish filets to the baking sheet and drizzle with remaining 1 tablespoon oil and sprinkle with remaining 1 teaspoon salt and remaining spice mix. Use your hands to rub the spices/salt/oil all around to coat the fish. Bake for 10-20 more minutes (depending on thickness), or until fish is cooked through (easily flakes with a fork).
You can transfer the fish to a plate to flake it up or just do it right on the sheet pan. There will be some delicious juices from the fish that you can toss your sweet potatoes in on the baking sheet.
In a medium bowl, mix together mango, beets, cilantro, lime, salt, and cumin.
In a separate bowl, mash up the avocado, then stir in the yogurt, lime, garlic, and salt until combined. Thin it out with water, starting with ¼ cup.
Add the sweet potatoes, fish, salsa, and chips to your bowl. Top With avocado crema, cheese, and more cilantro.