Preheat oven to 400 degrees F
Toss carrots, broccoli, cauliflower, and bell pepper with olive oil, oregano, salt, and pepper
Spread vegetables on a baking sheet
Roast for 25 minutes, stirring halfway through
While vegetables roast, prepare tahini dressing by whisking together tahini, lemon juice, water, maple syrup, and salt
Divide roasted vegetables among bowls
Drizzle with tahini dressing
Add taco seasoning in a large bowl to
Serve with additional salt and black pepper
