In the upper right hand corner of your Chrome window, you will see the menu button. It has three lines stacked on top of one another. This menu is often referred to as the "hotdog" or the "hamburger". Click on it to access the Zoom options in the drop down menu.
You can then click on the little plus sign to zoom in closer. Of course - if you want to zoom out, you can use the little minus sign. Here is what it looks like when I zoom in a few times.
If you have adjusted the zoom in any way - you will have a small magnifying glass in the upper right hand corner of your address bar (also called the Omnibox). If you click on it, you can adjust your zoom from there, or you can hit "reset" to go back to normal.