I have a hard time swallowing home cooked food..?

hi im a guy, 18 years old. and for some reason i can finish fast food like mcdonalds so quick. but when its like house food like rice beans, and chicken i cant swallow like i need to drink every bite.. like its ard to swallow, whats wrong with me.. im 5'11 and 140 pounds.. i dont eat much.. i can eat alot of cereal though.... i know it sounds stupid but its a real problem for me.. please this is why im still skinny help me im tired of people call me boney