In a large bowl, toss cubed chicken with taco seasoning and olive oil until evenly coated.
Heat a large skillet over medium-high heat and cook chicken until internal temperature reaches 165°F (74°C), approximately 8-10 minutes. Remove and set aside.
In the same skillet, char the corn kernels over high heat until browned, about 5 minutes.
In a small mixing bowl, whisk together mayonnaise, sour cream, lime juice, and chili powder to create the elote sauce.
Combine the charred corn with the elote sauce and half of the cotija cheese.
Divide the cooked rice evenly among four meal prep containers.
Layer each container with seasoned chicken, black beans, and the street corn mixture.
Garnish with the remaining cotija cheese and fresh cilantro before sealing.