Preheat and prep: Heat the oven to 425°F (220°C). Line a large sheet pan with parchment for easy cleanup.
Rinse the quinoa under cold water to remove bitterness.
Season the chicken: Pat the chicken dry. Toss with olive oil, salt, pepper, garlic powder, smoked paprika, oregano, and lemon juice. Set aside while you prep the veggies.
Prep the veggies: Slice peppers and onion.
Cut broccoli into bite-size florets. Toss with olive oil, salt, and pepper on the sheet pan.
Roast: Push the veggies to one side of the pan and add the chicken to the other side. Roast for 18–22 minutes, until the chicken reaches an internal temperature of 165°F (74°C) and veggies are tender with some charred edges.
Cook the quinoa: While the chicken bakes, add rinsed quinoa, broth, olive oil or butter, and a pinch of salt to a pot.
Bring to a boil, then cover and simmer on low for 15 minutes. Turn off the heat and let it steam for 5 minutes. Fluff with a fork.
Rest and slice: Let the chicken rest for 5 minutes, then slice or cube it.
This helps keep the juices in.
Assemble: Divide quinoa into 4–5 meal prep containers. Top with chicken and roasted veggies. Add chopped herbs and a squeeze of lemon.
Keep avocado and sauces separate until serving.
Store: Let everything cool slightly before sealing containers. Label with the date if you’re prepping for the week.