01 - Rinse quinoa (or grain of choice) thoroughly under cold water. In a medium saucepan, bring 2 cups of water or low-sodium chicken broth to a rolling boil. Add the grains, reduce heat to low, cover, and simmer until tender and liquid is fully absorbed, approximately 15 minutes for quinoa. Fluff with a fork and set aside to cool slightly.
02 - Preheat a grill or skillet over medium-high heat. Coat the chicken breasts evenly with olive oil, then season generously with smoked paprika, garlic powder, salt, and pepper. Grill or pan-sear for 5 to 7 minutes per side until the internal temperature reaches 165°F and juices run clear. Transfer to a cutting board and rest for 5 minutes before slicing thinly against the grain.
03 - While the chicken rests, halve the cherry tomatoes, dice the cucumber, shred the carrots, thinly slice the red onion, and cut the avocado into even slices. Wash and dry the baby spinach or mixed greens.
04 - In a small bowl, whisk together olive oil, fresh lemon juice, honey (or maple syrup), Dijon mustard, salt, and pepper until fully emulsified and smooth. Taste and adjust seasoning as needed.
05 - Divide the cooked grains evenly among four serving bowls. Layer each with a bed of spinach or mixed greens, then arrange cherry tomatoes, cucumber, shredded carrots, red onion, and avocado slices over the greens. Fan the sliced chicken on top of the vegetables in each bowl.
06 - Drizzle the prepared dressing generously over each assembled bowl. Sprinkle with crumbled feta or goat cheese if desired, and scatter chopped fresh herbs over the top. Serve immediately, or store each component separately in airtight containers for meal prep up to 4 days.