In a small bowl, combine the chili powder, cumin, garlic powder, and some salt/pepper.
Season cod fillets evenly and place on preheated grill.
Allow fish to cook several minutes on each side, or until opaque throughout and easily flaked. *You can also cook in a skillet with some olive oil.
Remove fish from heat and set aside.
In a skillet, add a bit of olive oil and sauté onion, red pepper, and corn for about 5 minutes.
Add in the black beans and heat for an additional 2-3 minutes.
To assemble fish bowl, place rice/quinoa on bottom of bowl. Top with bean mixture, flaked fish, avocado slices, chopped cilantro, and some lime juice.
Serve and enjoy!!