Heat oven to 450°F. Line a large sheet pan with parchment.
Pat the tofu very dry and tear into craggy, bite-size chunks. Toss directly on the sheet pan with avocado oil and salt until evenly coated.
Sprinkle the cornstarch over the tofu and toss gently until each piece looks lightly dusty. Spread in a single layer with space between pieces.
Roast undisturbed for 22–25 minutes, until deeply golden, crisp on the bottom, and blistered around the edges.
While the tofu roasts, make the glaze. In a small saucepan, whisk together the orange zest, orange juice, soy sauce, honey, and ginger. Bring to a simmer over medium heat and cook 5–7 minutes, stirring occasionally, until slightly reduced and glossy.
Taste the glaze and adjust if needed (more honey for sweetness, a splash of orange juice to loosen, or a pinch of salt if it needs rounding).
When the tofu is crisp, transfer it to a large bowl (or keep it on the pan) and pour all of the warm glaze over the tofu. Toss gently until fully coated and glossy. Optional: Reserve a little glaze for spooning at the table.
In a large bowl, toss the red cabbage and carrots (or slaw mix) with rice vinegar, toasted sesame oil, and salt, massaging briefly until just softened but still crunchy.
To assemble, spoon rice into bowls, top with cabbage-carrot mix and glazed tofu. Finish with scallions, cilantro, toasted sesame seeds, and optional citrus. Serve with optional heat.