Cook the grains: Prepare brown rice or quinoa according to package directions. Fluff and set aside.
Season the chicken: In a bowl, mix olive oil, smoked paprika, garlic powder, onion powder, salt, and pepper.
Rub over the chicken. Toss with 1/2 cup BBQ sauce to coat.
Roast the veggies: Heat oven to 425°F (220°C). On a sheet pan, toss sweet potato, bell pepper, and red onion with olive oil, chili powder, salt, and pepper.
Roast 20–25 minutes, stirring once, until tender and slightly charred.
Cook the chicken: Grill, bake, or pan-sear the chicken. Grill: Medium-high heat, 5–7 minutes per side to 165°F (74°C).
Bake: 425°F (220°C) for 18–22 minutes, depending on thickness.
Pan-sear: 6–8 minutes per side on medium heat, covered as needed.
Warm the beans and corn: Heat black beans and corn in a small skillet until warm. Season with a pinch of salt and pepper.
Make the high-protein sauce: Stir Greek yogurt, BBQ sauce, lemon juice, dill, salt, and pepper.
Add a splash of water to reach drizzle consistency.
Assemble the bowls: Divide grains among bowls or meal prep containers. Top with roasted veggies, beans, corn, and BBQ chicken. Add avocado, cilantro, and a squeeze of lime.
Drizzle with the BBQ ranch sauce. Add an extra stripe of BBQ sauce if you like it saucy.