Cook brown rice according to package directions until you have about 7 1/2 cups cooked.
While rice cooks, brown the ground beef in a large skillet over medium-high heat, breaking it apart as it cooks.
Drain any excess grease, then add chili powder, garlic powder, onion powder, dried oregano, paprika, ground cumin, salt, and black pepper. Stir to coat the beef evenly.
Spread the drained corn on a baking sheet and roast at 400°F for about 10 minutes until slightly charred.
Stir chopped fresh cilantro and lime juice into the warm cooked rice; taste and adjust seasoning if needed.
Let the seasoned beef, rice, and roasted corn cool for at least 20 minutes before portioning to prevent condensation.
Portion 1 1/2 cups cilantro lime rice into the largest compartment of each meal prep container.
Add roughly 1/3 pound of seasoned ground beef to the second compartment of each container.
Combine the black beans and roasted corn, then divide evenly into the third compartment across all five containers.
Label each container with the prep date and refrigerate. Keep pico de gallo, avocado, and cheese separate to add at serving.