To a blender or food processor, add all the marinade ingredients. Blend until smooth, then taste and adjust any flavors as necessary. You might want it to be spicier, sweeter, saltier or you might want more lime flavor.
Add the drained and chopped tofu to a large bowl or baking dish and cover it with the marinade. Let it marinate for 20 minutes to an hour.
Meanwhile, cook the Zatarain's roasted garlic adobo brown rice with black beans according to the package.
While the rice and beans cook, add half of the olive oil to a nonstick skillet over medium heat, followed by the minced garlic. Saute for 2-3 minutes until the garlic is fragrant, then adde the chopped bell peppers and peas. Add salt and pepper to taste. Cook on medium/high heat for about 10 minutes, until the bell pepper is soft and the peas are warmed through. Remove the mixture from the pan and set aside.
Add the remaining olive oil to the same nonstick skillet and let it heat up for a mintue or two. Using tongs or a fork, carefully transfer the tofu cubes to the skillet without getting too much extra marinade in the pan. Cook for 10-15 minutes over medium/high heat, flipping the pieces occasionally. You're going for brown crispy edges.
Add the veggies back to the skillet and spoon 3-4 spoonfuls of extra marinade over the mixture. Turn the heat up and toss everything in the sauce for 2-3 minutes. Then turn off the heat.
Assemble: divide the rice between three meal prep containers, followed by the tofu an veggie mixture. Top with cilantro if desired.