Preheat your oven to 375°F and position a rack in the center. Pat your turkey breast completely dry with paper towels—this ensures the skin crisps beautifully during roasting.
Combine olive oil, minced garlic, Dijon mustard, rosemary, thyme, salt, pepper, paprika, and cayenne pepper in a small bowl. Mix until the thanksgiving turkey breast family recipe herb paste is smooth and fragrant, with no lumps of mustard remaining.
Rub the entire herb mixture across the turkey breast skin and underneath the skin where possible. Place the bird skin-side up in a roasting pan, positioning it so it won't touch the oven walls during cooking.
Arrange quartered onion, carrot chunks, and sage sprigs around the turkey in the pan. Pour chicken broth into the bottom of the pan, then dot the turkey skin with butter pieces for your roasted turkey to achieve golden color and moisture.
Roast for 50 to 55 minutes until the internal temperature reaches 165°F when measured at the thickest part without touching bone. Squeeze fresh lemon juice over the skin during the last 10 minutes of cooking for brightness and color.
Remove from the oven and let the turkey rest for 10 minutes before carving—this allows juices to redistribute throughout the meat. Save the pan drippings to make an incredible gravy that everyone will ask for the recipe.