When you’re prioritizing protein, chicken breast is the obvious choice. But plain grilled chicken gets old fast. This recipe keeps it interesting with a bright lemon-herb marinade that actually penetrates the meat. Paired with protein-rich quinoa and roasted vegetables, you end up with a complete meal that delivers around 45-50 grams of protein per serving.
The chicken stays juicy. The quinoa adds texture and extra protein. The vegetables provide fiber and nutrients. It’s the kind of meal that supports your goals without feeling like diet food.
What You’ll Need
For the Chicken:
- 4 boneless, skinless chicken breasts (6-8 oz each)
- ¼ cup olive oil
- Juice of 2 lemons
- Zest of 1 lemon
- 4 garlic cloves, minced
- 2 tablespoons fresh rosemary, chopped
- 2 tablespoons fresh thyme leaves
- 1 tablespoon Dijon mustard
- 1½ teaspoons kosher salt
- 1 teaspoon black pepper
For the Quinoa:
- 1½ cups dry quinoa, rinsed
- 3 cups chicken broth or water
- ½ teaspoon kosher salt
- 2 tablespoons fresh parsley, chopped
- Juice of ½ lemon
For the Vegetables:
- 1 lb Brussels sprouts, halved
- 2 large carrots, peeled and cut into 2-inch pieces
- 1 red bell pepper, cut into chunks
- 2 tablespoons olive oil
- 1 teaspoon garlic powder
- ½ teaspoon kosher salt
- ½ teaspoon black pepper
Tools:
- Large resealable bag or shallow dish
- Grill or grill pan
- Medium saucepan with lid
- Large baking sheet
- Tongs
- Meat thermometer
- Chef’s knife
- Cutting board
- Measuring cups and spoons
- Whisk
Marinating the Chicken
In your resealable bag or shallow dish, whisk together the olive oil, lemon juice, lemon zest, minced garlic, rosemary, thyme, Dijon mustard, salt, and black pepper.
Add the chicken breasts. Seal the bag or cover the dish. Massage the marinade into the chicken, making sure each piece is well coated.
Refrigerate for at least 30 minutes, or up to 4 hours. The longer it marinates, the more flavor it absorbs. Don’t go past 4 hours or the acid from the lemon can start to make the texture mushy.
Preparing the Quinoa
Rinse the quinoa under cold water in a fine-mesh strainer. This removes the natural coating that can make it taste bitter.
In your medium saucepan, combine the quinoa, chicken broth or water, and salt. Bring to a boil over high heat.
Once boiling, reduce the heat to low, cover, and simmer for 15 minutes. Don’t lift the lid.
After 15 minutes, remove from heat and let it sit, covered, for 5 more minutes. This lets the quinoa absorb any remaining liquid and fluff up.
Remove the lid and fluff with a fork. Stir in the chopped parsley and lemon juice.
Roasting the Vegetables
Preheat your oven to 425°F.
Spread the Brussels sprouts, carrots, and bell pepper on your baking sheet in a single layer. Drizzle with olive oil and sprinkle with garlic powder, salt, and black pepper. Toss to coat evenly.
Roast for 25-30 minutes, stirring halfway through. The vegetables should be tender and caramelized at the edges.
Grilling the Chicken
While the vegetables roast, heat your grill or grill pan to medium-high heat. Lightly oil the grates.
Remove the chicken from the marinade, letting excess drip off. Discard the marinade.
Grill the chicken for 6-7 minutes per side, flipping once. The internal temperature should reach 165°F when checked with a meat thermometer inserted into the thickest part.
Let the chicken rest for 5 minutes before slicing. This keeps the juices inside instead of running all over your cutting board.
Serving
Divide the quinoa among four plates. Slice each chicken breast and arrange it over the quinoa. Add a portion of roasted vegetables to each plate.
If you want extra brightness, squeeze a bit more lemon juice over everything before serving.
This makes 4 servings. Each serving provides approximately 45-50 grams of protein, depending on the size of your chicken breasts.
Leftovers store well in the refrigerator for up to 4 days. Keep the components separate if possible so you can reheat them individually. The chicken is excellent cold in salads the next day.
For meal prep, you can grill all the chicken at once and portion it with the quinoa and vegetables into containers. Reheat in the microwave for 2-3 minutes or enjoy cold.
