Place the pork fillets in a shallow dish. In a small bowl, combine all marinade ingredients and mix well. Pour the marinade over the fillets, ensuring they are well coated. Cover and refrigerate for 3-4 hours or overnight for best results.
When ready to cook, preheat the oven to 180 degrees Celsius.
Remove the pork from the marinade, reserving the liquid. You can bake the fillets in the oven for 20-25 minutes or sear them in a hot pan until nicely charred and cooked through (internal temperature of 63°C).
While the pork is cooking, prepare any components that need cooking, such as sweet potato rounds. Toss these with olive oil, salt, and pepper and roast for about 20-25 minutes until tender.
Allow the cooked pork to rest for 5 minutes, then slice into thin medallions.
To assemble the burrito bowls, divide the rice among serving bowls. Arrange the sweet potato rounds, black beans, sliced tomatoes, jalapeños or peppers, avocado, and pickled onions around the rice.
Place the sliced pork on top of the rice. Drizzle with chipotle mayonnaise and garnish with fresh cilantro and lime wedges.