Pat the chicken dry and season it with salt, paprika, black pepper, and Aleppo pepper. Arrange the chicken in the slow cooker.
Prepare the honey and harissa:
Whisk the honey and harissa together until smooth.
Cook the chicken:
Pour the honey-harissa mixture over the chicken. Add the water or chicken broth. Put the lid on the slow cooker. Cook over high heat for 3 to 4 hours or over low heat for 5 to 8 hours.
Finish the chicken:
Using tongs, carefully transfer the chicken to a foil-lined baking sheet. Ensure the chicken is skin-side up. Set aside.
Make the sauce:
Scoop out 2 cups of liquid from the slow cooker.
Heat the oil or butter in a small saucepan over medium heat. Once hot, add the flour and stir to coat. Stir regularly for 1 to 2 minutes until it takes on a nutty aroma and turns golden brown.
Slowly add 1 cup of the braising liquid and whisk until a slurry forms. Continue adding the rest of the liquid in increments until the sauce reaches your desired consistency. Taste and adjust the seasonings to your preference. Reduce the heat to low and simmer as you finish the chicken.
Broil the chicken:
Turn on your broiler. Transfer the chicken to the broiler for 2 to 4 minutes until the skin deepens in color and crisps up.
To serve:
Arrange the chicken on a serving platter. Garnish with your favorite toppings, such as minced parsley, pomegranate arils, crushed pistachios, or torn mint leaves. Serve the sauce on the side. This chicken pairs beautifully with roasted or mashed potatoes. Enjoy!