Heat the olive oil in a large skillet over medium heat. Add the onion, garlic, and bell pepper. Sauté for 3 minutes to soften.
Add the chicken & chorizo, and continue to sauté for 4-5 minutes, or until the chicken is lightly browned.
Turn the heat up to medium-high, and stir in the riced cauliflower. Sauté for 2-3 minutes to get it cooking.
Stir in the diced tomatoes, chicken broth, spices (saffron, paprika, oregano, thyme, red pepper flakes, salt, & pepper), and bay leaf. Bring to a boil, then reduce the heat to a simmer for 15 minutes, stirring occasionally.
Stir in the shrimp, then cover the pan & continue to simmer until the shrimp is cooked (it should be pink & opaque), about 3 minutes.
Remove the bay leaf, and sprinkle the dish with fresh parsley. Serve hot with lemon juice squeezed over top.