Prep the chicken. Pat the chicken dry. In a bowl, mix garlic powder, onion powder, smoked paprika, chili powder, salt, pepper, and olive oil.
Rub evenly over the chicken.
Cook the chicken. Heat a large skillet over medium-high. Add a little oil if needed. Cook chicken 5–6 minutes per side, until browned and cooked through (internal temp 165°F).
Rest 5 minutes, then slice or cube.
Cook your base. While chicken cooks, prepare rice or quinoa according to package directions. Fluff with a fork. For extra flavor, stir in a squeeze of lime and a pinch of salt.
Make the avocado ranch. In a blender or food processor, combine avocado, Greek yogurt, mayonnaise, buttermilk (or water), dill, parsley, chives, garlic, onion powder, lime juice, salt, and pepper.
Blend until creamy. Adjust thickness with a splash more liquid, and salt to taste.
Prep the veggies. Chop romaine, halve cherry tomatoes, slice cucumber and onion, and prepare corn. If using canned corn, rinse and drain.
If you like, char corn in a dry skillet for extra flavor.
Assemble the bowls. Add a scoop of grains to each bowl. Top with greens, chicken, tomatoes, cucumber, corn, and red onion. Add avocado slices if you’re not blending all the avocado into the dressing.
Dress and finish. Drizzle with avocado ranch.
Add lime wedges, hot sauce, or herbs. Taste and add a pinch of salt if needed.
Serve right away. These bowls are at their best when the chicken and grains are warm and the veggies are crisp.