The big thing I've always read about food is not to stress it or push hard. (Also, FYI, I'm an occupational therapist who works with children with autism--who often have lots of food and behavioral issues.) She's asserting her growing independence, perhaps, and her new mobility is too exciting to pause to eat. Believe it or not, she somehow will eat enough to keep growing and being healthy. Remember to look at nutrition from a weeks worth of intake rather than just a day or two.
While I admit that the eating on the run thing would drive me crazy, try lots of healthy finger foods set out on a plate that she can grab while on the go. If she throws this food, silently remove the plate for awhile and put it back out later. Reprimanding her for throwing may just make that behavior more exciting for her. ("Hey, Mom's yelling! How fun! I should try throwing even more!")
You might also try putting her in her high chair and spoon feeding her several bites before letting her feed herself or alternating spoon feeding with self-feeding. Try giving her a small amount of finger food at a time. Give her just a couple options (not the whole fridge!) and a couple chances to eat instead of throw, and let her go if she's not interested. Keep offering her various foods each meal, but don't worry if she eats a limited selection for now like eating cheese and fruit instead of veggies.
Overall, try being playful and casual about meal time and see if she warms back up to eating. I'd say it's definitely just a phase.