In a saucepan, bring chicken stock to a boil. Stir in the saffron, turmeric and salt to taste. Add rice and bring back to a boil. Reduce heat to a simmer, cover and cook for 20 to 25 minutes or until tender. Remove from heat, uncover and stir in the peas. Transfer to a bowl and reserve until needed.
Season the chicken and the shrimp separately with the oregano, smoked paprika, extra virgin olive oil, salt and pepper to taste.
In a medium sauté pan over medium high heat cook the chicken for 6 - 8 minutes or until cooked through. Remove from the pan and reserve.
In a medium sauté pan over medium heat cook the shrimp for 3 minutes, turn the shrimp and cook the other side for 2 minutes. The shrimp should be pink and cooked through. Remove from the pan and reserve.
To make the vinaigrette, in a medium bowl whisk the red wine, lemon juice, garlic, shallots and extra virgin olive oil.Season with salt and pepper. Reserve until needed. It will keep well in the refrigerator for up to 4 days.
In a big bowl gently mix the rice and peas with the artichoke hearts, roasted bell peppers, some of the parsley and scallions. Gently stir in the chicken and shrimp.
Serve the paella over the baby spinach and arugula. Add some of the vinaigrette and toss gently. Garnish with the remaining chopped parsley and scallions.