Rinse the quinoa. Place quinoa in a fine-mesh strainer and rinse under cold water for 30 seconds.
This removes bitterness and helps it cook up fluffy.
Cook the quinoa. Add quinoa and broth (or water) to a pot. Bring to a boil, then reduce heat, cover, and simmer for 15 minutes. Turn off heat, let sit covered for 5 minutes, then fluff with a fork.
Prep the chicken. Pat chicken dry.
In a bowl, mix olive oil, garlic powder, smoked paprika, oregano, cumin, salt, and pepper. Rub evenly over the chicken.
Roast or pan-cook the chicken. For roasting: Bake at 425°F (220°C) on a lined sheet for 18–22 minutes, until the thickest part reaches 165°F (74°C). For skillet: Cook over medium heat 5–7 minutes per side.
Rest 5 minutes, then slice.
Roast the veggies (optional but tasty). Toss broccoli, bell pepper, and onion with a little olive oil, salt, and pepper. Roast on a sheet pan at 425°F (220°C) for 12–15 minutes until tender-crisp. If you prefer raw crunch, keep them fresh.
Make the dressing. Whisk olive oil, lemon juice, Dijon, garlic, honey, salt, and pepper until emulsified.
Taste and adjust acidity or sweetness as you like.
Assemble the bowls. Divide quinoa among 4–5 meal prep containers. Add sliced chicken, veggies, and a handful of spinach. Top with cherry tomatoes.
Keep avocado, feta, and dressing separate if storing for several days.
Finish with flavor. Add a squeeze of lemon, sprinkle fresh herbs, or drizzle the dressing right before eating. For extra crunch, toss in pumpkin seeds.