Preheat your oven to 450ºF.
Remove the cauliflower florets, rinse, and transfer to a large bowl. Toss with the olive oil and ranch seasoning before transferring to a half sheet pan lined with parchment paper.
Add the frozen chicken breast chunks to a separate half sheet pan.
Place the cauliflower on the middle rack, and the chicken on the bottom rack. Bake for 30-35 minutes until the cauliflower and chicken are cooked through and starting to turn golden brown.
While the chicken and cauliflower are in the oven, mix the ranch ingredients together in a bowl and prepare the other veggies and bowl ingredients. Set aside.
Once the chicken and cauliflower are ready, toss the cooked chicken with the buffalo sauce and serve right away.
To assemble bowls, place your desired amount of greens in the bowls and top each with about 6 oz of buffalo chicken, 1/6th of the roasted cauliflower, 1/2 oz of blue cheese, about 2 oz of ranch, and your desired amount of carrots and cabbage.