Stir-fry the aromatics: In the same pan as the tofu, heat vegetable oil or vegan butter over medium-high heat. Add in the sliced white parts of the scallions, along with chili paste (if using), and black pepper. Stir-fry for 2-3 minutes, or until the scallions start to look translucent. Then add in the minced garlic and stir fry for another minute. Reduce heat slightly if the garlic starts to brown.
Add in the vegetables: Add in the frozen peas and carrots and stir-fry for another 1-2 minutes to warm through.
Add in the rice: Add in the cold leftover rice. Stir-fry the rice for 4-6 minutes. It should start to take on some golden-brown color.
Season: Add in the soy sauce and stir to distribute.
Add in the tofu scramble: Fold in the scrambled tofu and the green parts of the scallions and stir-fry for an additional 2-3 minutes to heat everything through.
Adjust seasoning: Taste and season with additional black pepper, salt, soy sauce, or chili paste to preference. Enjoy!