In a small bowl, whisk lemon juice, ΒΌ cup olive oil, aminos, garlic, and oregano together. Add thawed chicken breasts, tossing to coat. Allow to marinate at least 30 minutes. If you marinate for longer than 30 minutes, be sure to place the chicken in the refrigerator.
Preheat oven to 400 degrees. Combine prepared vegetables on a parchment lined baking sheet. Drizzle with olive oil, tossing with your hands to thoroughly coat each piece with olive oil. Sprinkle with salt and freshly cracked pepper. Roast until fork tender, about 20 minutes.
Once chicken is done marinating, heat 1 tablespoon olive oil in an oven safe pan (I like to use a cast iron!). Add chicken to pan, cooking on each side for 3-4 minutes until golden and seared. Transfer chicken to 400 degree oven for the last 10 minutes that the vegetables are cooking. Ensure chicken is cooked to 165 degrees.
As the vegetables are roasting and the chicken cooking, prepare the Fire Roasted Tomato Vinaigrette. In a food processor, combine all ingredients. Blend thoroughly to combine, or until desired consistency is met. I blended mine for about 20 seconds until it was completely smooth.