Prepare your rice.
Meanwhile, heat the oven to 425. Line a rimmed large metal baking pan with parchment paper. Place the squash and peppers on the lined pan, then toss in oil to evenly coat. Roast for 10 minutes, flip, then roast for 10 minutes more, or until tender. Season with salt.
In a small bowl, stir together the mayo, cilantro, hot sauce, lime zest, and juice. Taste, and adjust if you'd like.
While the rice and squash/peppers are cooking, heat a medium-sized nonstick pan over medium-low heat. Add the oil, then the corn. Cook the corn for a couple minutes, then add the chili powder and cumin, cooking for one more minute. Fold in the beans and lime juice, then cook until warmed through. Season with cilantro and salt.
Scoop the hot rice into a large bowl, then top with the roasted squash and peppers, black bean and corn mixture, crema, avocado, sprouted seeds, cilantro, hot sauce, and vegan feta, if you like. Serve with lime wedges.