If you are using the large tenderloin from Costco, cut it almost in half, then cut the halves almost in half again so that you kind of unfold it a few times and try to pound it out flat to about 1/2" thickness or slightly thinner. (If you are using a smaller pork tenderloin, cut almost in half and pound it flat).
Once the tenderloin is flat and has a good surface area, spread the cream cheese all over the top. Lay the roasted red peppers over the cream cheese then sprinkle on the crumbled bacon. Evenly sprinkle on the packages dried pesto seasoning and lay the spinach leaves all over the top.
Roll the pork up (like you would if you were making cinnamon rolls) and tie it shut with 3 or 4 pieces of kitchen twine if needed. Next, rub olive oil, paprika, salt and pepper all over the pork and place in a greased baking sheet. Bake at 350-degrees about 60-90 minutes or until pork is cooked through. Once cooked, slice and serve!
**This makes quite a lot. After rolling, but before baking, cut it into thirds or fourths. Wrap in plastic wrap and freeze!