Stir in black beans, canned tomatoes, chicken broth, garlic powder, chili powder and cumin. Bring to a simmer, cover and reduce heat to low. Cook about 20 minutes or until rice is tender. Taste and season with additional salt and pepper as needed.
Add chicken back to pan and stir to combine. Sprinkle with cheese, add a lid and let set for 2-3 off heat to melt cheese.
Garnish with fresh tomatoes, green onions, sour cream and guacamole.