Installing new laminate is a job on its own, not to mention taking out the existing floor. This leaves people wanting to take some shortcuts, such as leaving the existing tile and installing the new laminate on top. This indeed can be done, just know there are risk factors.
Before installing your laminate over the existing tile, please check to see if there are any cracked, broken, or missing pieces of the tiles. (Any imperfections in the tile can cause installation issues and or future issues with moisture and expanding and contrasting.) You'll want to purchase a click lock product and not a glue down, if you are interested in future use of the tile.
One of the biggest issues you may run into is the height or thickness of the room. Installing laminate on top of tile will increase the total thickness and may cause issues when it comes to transitioning rooms, ending doorways, and fitted appliance spaces. If you have cabinetry that is designed for your appliances and fits snug with only the tile underneath, your appliances will no longer fit when installing laminate on top.. Lastly you'll want to leave a 3/8" gap around the perimeter (baseboard will cover) that is left for expansion.