Preheat the oven to 220°C degrees. Line a rimmed baking sheet with a silicone mat or parchment paper.
Using your fingers, pull the tofu into 2.5cm chunks and scatter them on the prepared sheet pan.
Add the bell peppers, onion, garlic, taco seasoning, and oil. Stir until everything is evenly coated, then spread it all out in a single layer.
Bake for 25 minutes. (If you’re using frozen bell peppers, add 5 more minutes.)
