Cook the rice or quinoa according to package instructions and set aside.
Season the chicken with olive oil, garlic powder, salt, and pepper.
Heat a pan over medium heat and cook the chicken for 5–7 minutes per side until fully cooked.
Remove from heat and slice into strips.
Toss the chicken with BBQ sauce until evenly coated.
Prepare your toppings by slicing vegetables and warming the corn if needed.
Assemble the bowl by adding rice as the base, followed by BBQ chicken and toppings.
Drizzle with ranch or chipotle mayo if desired and serve immediately.