Preheat your oven to 400°F.
In a small bowl, combine lime juice, smoked paprika, salt, and pepper. Mix well to form a marinade.
Place the chicken breast in a shallow dish and coat evenly with the marinade. Let it sit for at least 15 minutes to absorb the flavors.
While the chicken marinates, chop the zucchini, red bell pepper, and red onion into bite-sized pieces. Toss the vegetables with olive oil, salt, and pepper.
Spread the vegetables on a baking sheet in a single layer and roast in the oven for 15-20 minutes, stirring halfway through, until they are tender and slightly charred.
Meanwhile, heat a grill pan or regular skillet over medium-high heat. Cook the marinated chicken breast for about 5-7 minutes per side, or until fully cooked through and internal temperature reaches 165°F.
Slice the chicken into strips once it rests for a few minutes.
To assemble the bowl, place the cooked quinoa as the base, top with the roasted vegetables, and arrange the sliced chicken on top.
Finish with an extra squeeze of lime if desired, and serve warm.