Puerto Rican-Style Chicken Lasagna

Heat olive oil in a pan over medium heat. Saute onion, bell peppers, shallots, sweet peppers, and scallions until soft, about 5 minutes. Add tomatoes, salt, pepper, and sugar. Simmer until flavors combine, about 1 hour. Add tomato paste to thicken the sauce, if necessary.

Meanwhile, place chicken in a large pot and cover with water. Bring to a boil. Reduce heat and simmer until an instant-read thermometer inserted near the thigh bone reads 165 degrees F (74 degrees C), 45 minutes to 1 hour. Drain and let cool until easily handled.

Fill a blender halfway with sauce. Cover and hold lid down with a potholder; pulse a few times before leaving on to blend. Pour into a pot. Repeat with remaining sauce. Cover to keep warm.

Pull chicken meat off the bones. Heat olive oil in a saucepan and saute garlic until golden brown, 3 to 5 minutes. Add the boiled chicken and shred it with 2 forks. Moisten the mixture with chicken broth. Add sazon seasoning and olives; mix well. Season with salt and pepper. Remove from heat.

Bring a large pot of lightly salted water to a boil. Cook lasagna noodles in the boiling water, stirring occasionally, until tender yet firm to the bite, about 8 minutes. Drain.

Preheat the oven to 350 degrees F (175 degrees C).

Cover the bottom of a 9x13-inch baking dish with a layer of lasagna noodles. Cover with some sauce, followed by some chicken, then a layer of mozzarella cheese. Repeat with remaining noodles, sauce, chicken, and cheese. Cover the final layer of mozzarella with Cheddar cheese for extra color. Cover with aluminum foil.

Bake lasagna in the preheated oven until heated through and cheese is melted, about 25 minutes.