Preheat oven to 400 degrees. Spray an 8” x 8” x 2” baking dish with non-stick cooking spray; set aside.
In a small bowl, combine the parmesan cheese and panko, toss to combine. Add in the melted butter, mix to fully incorporate; set aside.
Bring 2 - 3 quarts of water to a rolling boil over high heat, add in the pasta and salt to taste, and cook according to package directions just shy of al dente, drain; set aside.
Melt butter in a large saucepan over medium heat. Add in the minced garlic, cook for 1 minute. Add in the flour, cook for 1 minute, stirring constantly. Add in the milk, lower heat to medium-low and cook until thickened, approximately 3 - 4 minutes, stirring constantly. Add in the cheddar, fontina, bleu and cream cheeses, stir until all the cheeses have melted into sauce. Add in the nutmeg, 1/2 teaspoon salt and 1/4 teaspoon pepper, mix to fully combine. Add in the reserved pasta, tomatoes, and chives, mix to fully combine.
Transfer to the prepared baking dish, top evenly with the parmesan/panko mixture. Place in preheated oven and bake until bubbly and topping is golden brown, approximately 25 minutes. Remove from oven, cool for 5 minutes.
After macaroni and cheese has cooked, heat pork according to package directions. Combine in a medium bowl the ketchup, garlic powder, chili powder, cumin, hot sauce, agave nectar, remaining 1/2 teaspoon salt and remaining 1/4 teaspoon pepper. Add in the heated pork, mix to combine.
To serve: After macaroni and cheese has cooled for 5 minutes, use a 3-inch cookie or biscuit cutter to cut 4 circles of macaroni and cheese (see note below). Place each serving of macaroni and cheese onto serving plate, top evenly with the pork, and garnish with bleu cheese crumbles.
Note: To easily remove the macaroni and cheese circles from the baking dish, use a 3-inch cookie or biscuit cutter, leave the cutter around the mac and cheese, carefully use a small spatula to remove the cutter and mac and cheese from the pan, place onto serving platter, then remove the cutter. Continue this process for all 4 servings.