Pre-heat oven to 375F. Move rack to top of oven. Line a baking sheet with foil for easy clean-up.
Combine mayo, mustard, honey, and garlic powder in a small bowl.
Spread panko crumbs on a plate.
Season basa with salt and pepper. Dip it in the mayo/mustard/honey mixture so it's evenly coated, and then place it in the panko crumbs. Ensure that the fish is evenly coated with panko.
Place fish on baking sheet and then cook for 15-20 minutes (depending on thickness of fish) or until the fish is cooked through and the panko crust starts to brown.
While fish is cooking, prepare the garlic yogurt, if desired, by combining the garlic, yogurt, and lemon juice then topping with a drizzle of olive oil and a sprinkling of chopped parsley.
Serve fish with wedges of lemon and fresh parsley sprinkled on top. Add extra salt & pepper if needed.