Heat the oven to 450 degrees. Line cauliflower on a baking sheet. Mix olive oil and spices, then drizzle and mix so it's spread evenly over the cauliflower.
Bake cauliflower for 20 minutes. After 20 minutes, flip, then bake another 10 minutes.
While cauliflower is baking, add quinoa to a medium pot. Add stock/broth.
Bring heat to medium/high, then when quinoa is brought to a boil, turn heat to low and cover for 15 minutes. Then, remove from heat.
Make the sauce by combining your teriyaki, sweet and sour sauce, and sriracha. Start out with just a little bit of sriracha and taste. If you need more heat, add more sriracha until sauce reaches your desired taste.
To make the bowls, add quinoa, cauliflower, and mixed greens to a large bowl.
Top with sesame seeds and drizzle with sauce.