Prepare pesto if necessary and place in a large bowl.

Cook fettuccine noodles according to package instructions.

While the noodles are cooking, heat oil in a large skillet then add the garlic. Cook until soft and fragrant.

Add peppers and olives to the skillet and cook until hot.

When the pasta is finished, reserve 1/3 cup of the pasta water and drain the rest.

Whisk the pasta water with the pesto then combine the noodles and skillet mix to the bowl and toss to mix.