- Preheat your oven to 400 F. 
- Place the chicken, breast-side down, on a cutting board. Cut along both sides of the backbone from end to end with kitchen shears and remove the backbone. Flip the chicken breast side up, and open it like a book. Press firmly on the breasts with your palm to flatten them. - 1 whole chicken 
- Save the backbone for some homemade stock. 
- In a small bowl, combine the cooking fat and 2 tablespoon of the rosemary. - 3 tbsp. melted Paleo cooking fat 
- Rub the chicken with ⅔ of the fat/rosemary mixture and season the chicken to taste with sea salt and ground pepper. 
- Line a large baking sheet with aluminum foil. 
- Place the chicken on the baking sheet and surround it with the vegetables and the lemons. - 2 lemons 
- Pour the remaining fat/rosemary mixture over the vegetables and season to taste. - 3 tbsp. fresh rosemary, 2 onions, 4 carrots, Sea salt and freshly ground black pepper to taste, 2 bell peppers 
- Place the baking sheet in the oven and cook for 1 hour or until a meat thermometer reads 165 F in the thickest part of the breast. 
- Remove the chicken from the oven, squeeze some lemon juice over it, and serve. - 2 lemons