Preheat your oven to 400°F and line a baking sheet with parchment paper.
Slice the zucchini and bell peppers into thin strips, then toss them with avocado oil, sea salt, and black pepper on the prepared sheet.
Roast the vegetables for 15 minutes or until they are tender and slightly caramelized.
While the vegetables roast, slice the seitan into thin strips and toss with tamari and smoked paprika in a small bowl.
Heat a non-stick skillet over medium-high heat and sear the seitan strips for 3-5 minutes until the edges are golden and crisp.
Toast the sprouted grain bread slices until they reach your desired level of browning.
In a small bowl, mash the avocado with a fork until smooth.
Spread the hummus on one slice of toast and the mashed avocado on the other.
Layer the roasted vegetables and seared seitan between the bread slices, press down gently, and slice in half to serve.