If the shrimp is frozen, just fill a large bowl with cold water. Submerge the shrimps in the cold water and that should do the trick pretty fast. You can use any shrimps that you desire. Also, if you are vegan or allergic, you could make it without shrimps and cheese, which is also very delicious. You can use a different pasta, for example, gluten free pasta, egg pasta, spaghetti, or perhaps if you are on low carb diet you may use zoodles (zucchini noodles). You can use chicken, however, it might take a bit longer to cook. I would suggest that you cook the chicken first. So, cut into bite-size pieces and season it with a bit of salt and ground black pepper, then cook it in the skillet with a bit of oil for about 5-7 minutes over medium-high heat. After it cooks just transfer it to the paper towel and set aside until it's ready to be used. So you would add the chicken back at the point when I added shrimp, which is after I sauteed garlic, tomatoes, and zucchini.