In a large skillet, brown the ground beef over medium heat until fully cooked and no longer pink.
In a small bowl, combine chili powder, garlic powder, onion powder, dried oregano, paprika, ground cumin, salt, and black pepper.
Sprinkle the seasoning mix over the cooked beef and stir to evenly distribute the spices. Allow to simmer for 3-5 minutes, stirring occasionally.
Place approximately 1 1/2 cups of cooked brown rice into each serving bowl.
Spoon the seasoned ground beef mixture over the rice in each bowl.
Top each bowl with black beans, corn, pico de gallo, avocado slices, shredded cheddar cheese, and a sprinkle of chopped cilantro.