Pat the tilapia fillet dry and season both sides with salt and pepper.
Heat 1 teaspoon of olive oil in a non-stick skillet over medium-high heat.
Sear the tilapia for about 3-4 minutes per side, or until the fish flakes easily with a fork. Remove from the pan and set aside.
While the fish is cooking, preheat your broiler or a grill pan to high heat.
Place the red bell pepper (whole) on a baking sheet and roast under the broiler or on the grill pan until the skin is charred and blistered, turning occasionally, about 8-10 minutes.
Once roasted, let the bell pepper cool slightly, then peel off the charred skin, remove the seeds, and chop into small pieces.
In a small bowl, combine the chopped red bell pepper with minced garlic, lemon juice, and 1/2 tablespoon olive oil. Stir to create the citrus salsa; season with a pinch of salt and pepper.
Plate the seared tilapia and generously spoon the roasted bell pepper salsa over the top.
Serve immediately, enjoying the fresh citrus flavor paired with perfectly seared tilapia.