In a large, wide braising pot (large enough to hold all the fish fillets), add the bacon and turn the heat on the stove to medium-high. Cook for 8-10 minutes or until the fat has rendered. Using a slotted spoon, transfer the bacon to a bowl. Drain off all but 1 tablespoon bacon fat.
Cook the Vegetables:
Return the pot to medium heat and add 2 tablespoons butter. Once melted, add the carrots, celery, and onion and cook, stirring regularly, for 7-8 minutes or until the vegetables begin to soften.
Add the garlic and cook for 45 seconds or until fragrant.
Prepare the Broth:
Add the chicken stock and the reserved bacon and bring to a boil. Season with salt, pepper, and paprika.
Cook the Tilapia:
Place the tilapia fillets in the broth and sprinkle a little paprika on top of each fillet. Place a lemon round on each fillet and transfer to the oven. Cook for 15 minutes or until the fish is opaque and cooked through.
Finish the Broth:
Using a spatula, carefully transfer the tilapia fillets to 4 shallow bowls.
Turn the heat on the broth to medium and add the peas and parsley. Cook for 3-4 minutes or until the peas are bright green. Taste and season one final time with salt, pepper, or crushed red pepper if desired. Turn off the heat.
To Serve:
Ladle the hot broth over the tilapia and sprinkle each dish with a bit of paprika and a drizzle of extra virgin olive oil, if desired. Enjoy!