Related to the "Pawns won't eat" and general "food" related errors, here is what I've found as far as cause of the pawns not eating:

Exception in Verse.AI.ThinkNode_PrioritySorter TryIssueJobPackage: System.TypeInitializationException: The type initializer for 'Forgelings.Utils' threw an exception. ---> System.NullReferenceException: Object reference not set to an instance of an object
at Forgelings.Utils..cctor () [0x00094] in <9c305730f93f4a6a87ebfb2781017e33>:0
--- End of inner exception stack trace ---
at (wrapper managed-to-native) System.Object.__icall_wrapper_mono_generic_class_init(intptr)
at Forgelings.WillEat_Patch1.Postfix (System.Boolean& __result, Verse.Pawn p, Verse.Thing food, Verse.Pawn getter, System.Boolean careIfNotAcceptableForTitle) [0x0000d] in <9c305730f93f4a6a87ebfb2781017e33>:0
at (wrapper dynamic-method) RimWorld.FoodUtility.RimWorld.FoodUtility.WillEat_Patch1(Verse.Pawn,Verse.Thing,Verse.Pawn,bool)
at (wrapper dynamic-method) RimWorld.FoodUtility+<>c__DisplayClass12_0.RimWorld.FoodUtility+c__DisplayClass12_0.<BestFoodSourceOnMap>b__0_Patch0(RimWorld.FoodUtility/<>c__DisplayClass12_0,Verse.Thing)
at O21Toolbox.HarmonyPatches.Patches.Harmony_CustomDispenser+Patch_SpawnedFoodSearchInnerScan+<>c__DisplayClass0_0.<Prefix>b__0 (Verse.Thing x) [0x0000a] in <dda0d0b2a4f942ca937e62e6717f78a0>:0
at (wrapper dynamic-method) RimWorld.FoodUtility.RimWorld.FoodUtility.SpawnedFoodSearchInnerScan_Patch1(Verse.Pawn,Verse.IntVec3,System.Collections.Generic.List`1<Verse.Thing>,Verse.AI.PathEndMode,Verse.TraverseParms,single,System.Predicate`1<Verse.Thing>)
at (wrapper dynamic-method) RimWorld.FoodUtility.RimWorld.FoodUtility.BestFoodSourceOnMap_Patch5(Verse.Pawn,Verse.Pawn,bool,Verse.ThingDef&,RimWorld.FoodPreferability,bool,bool,bool,bool,bool,bool,bool,bool,bool,bool,bool,RimWorld.FoodPreferability,System.Nullable`1<single>)
at (wrapper dynamic-method) RimWorld.FoodUtility.RimWorld.FoodUtility.TryFindBestFoodSourceFor_Patch4(Verse.Pawn,Verse.Pawn,bool,Verse.Thing&,Verse.ThingDef&,bool,bool,bool,bool,bool,bool,bool,bool,bool,RimWorld.FoodPreferability)
at (wrapper dynamic-method) RimWorld.JobGiver_GetFood.RimWorld.JobGiver_GetFood.TryGiveJob_Patch4(RimWorld.JobGiver_GetFood,Verse.Pawn)
at Verse.AI.ThinkNode_JobGiver.TryIssueJobPackage (Verse.Pawn pawn, Verse.AI.JobIssueParams jobParams) [0x00000] in <b64badbf3c3d41018b3ca5d3e8c77771>:0
at Verse.AI.ThinkNode_PrioritySorter.TryIssueJobPackage (Verse.Pawn pawn, Verse.AI.JobIssueParams jobParams) [0x000fb] in <b64badbf3c3d41018b3ca5d3e8c77771>:0

And this was labeled as the initiator of the errors:

FoodUtility.WillEat: post: Forgelings.WillEat_Patch2.Postfix
FoodUtility.WillEat: post: Forgelings.WillEat_Patch1.Postfix