In a large bowl, combine the shrimp, lime juice, chili powder, oregano, cumin, garlic powder, smoked paprika, salt, and black pepper. Toss until the shrimp are evenly coated. Let marinate while preparing the remaining ingredients.
Heat 1 teaspoon avocado oil in a small saucepan over medium heat. Add minced garlic and cook for about 1 minute until fragrant.
Add the black beans, including their liquid, along with cumin and smoked paprika. Stir well.
Cover and bring to a gentle simmer. Cook for 15–20 minutes, stirring occasionally, until slightly thickened.
Lightly mash some of the beans using a fork or potato masher to create a creamy texture. Keep warm.
Heat 1 tablespoon avocado oil in a large skillet over medium-high heat.
Add the sliced bell peppers and cook for 5–6 minutes, stirring occasionally, until softened and lightly charred. Remove from the skillet and set aside.
Reduce heat to medium. Add an additional teaspoon of avocado oil if needed.
Add the marinated shrimp and cook for about 2 minutes per side until pink, opaque, and fully cooked.
Assemble the Shrimp Burrito Bowls by dividing cooked rice among serving bowls.
Top with black beans, cooked shrimp, fire-roasted corn, and sautéed bell peppers.
Finish with sliced avocado, fresh cilantro, and lime wedges. Serve immediately.