jsimpsonpt2100311_09_X17230WM.jpgJessica Simpson is enjoying all pregnancy has to offer including her favorite Lone Star State-inspired craving ... Texas Fried Steak!

The mommy-to-be and fiance Eric Johnson hit up BJ's Restaurant and Brewhouse in Century City just after 1pm on Monday with a friend ... and the restaurant tells X17online exclusively that Jessica was in "a great mood" while eating the fried entree.

After grubbing down her favorite meal, the threesome chowed down on BJ's signature dessert, Pizzooki ... two scoops of ice cream on a big and warm chocolate chip cookie.

We're told their bill was $70 ... and they left a $22 tip. Pretty generous!

There's been much speculation that Jess and Eric will be making the big announcement later this month. Too bad their wedding is on hold for now, but a new addition to the family is a pretty good reason to hold off the nuptials. Simpson rep has yet to confirm the pregnancy news.

We gotta say, Jess looks awfully comfy in that oversized sweatshirt!