Blackened Shrimp Bowls

Name: Blackened Shrimp Bowls
Cuisine: American
Ingredients: 2 c. cooked brown rice; 1 lb. shrimp, tails removed, peeled and deveined; 1½ tsp. cumin; 1 tsp. paprika; 1 tsp. garlic powder; ½ tsp. onion powder; Kosher salt; Freshly ground black pepper; 2 tbsp. olive oil, divided; 1 c. fire roasted corn; 1 red pepper, diced; 2 tbsp. freshly chopped cilantro, plus more for garnish; Juice of 1 lime, divided; 1 avocado, thinly sliced