Toss shrimp with olive oil, garlic powder, onion powder, salt, and pepper. Grill 2–3 minutes per side until pink.
Mix mango, red onion, jalapeño, cilantro, lime juice, salt, and pepper for salsa.
Whisk mayonnaise, Sriracha, lime juice, garlic powder, onion powder, salt, and pepper for sauce.
Assemble bowls with rice base, shrimp, avocado slices, salsa, and drizzle sauce.
